Mercury 350 MAG, SeaCore 350 MAG, 377 MAG, SeaCore 377 MAG User Manual

Page 1

NOTE: The following applies to CE‑marked products only.

Declaration of Conformity—Mercury MerCruiser

This sterndrive or inboard engine when installed in accordance to Mercury MerCruiser’s instructions complies with the requirements of the following directives by meeting the associated standards, as amended:

Recreational Craft Propulsion Engines with the Requirements of Directive 94/25/EC as amended by 2003/44/EC

Name of engine manufacturer: Mercury Marine MerCruiser

Address: 3003 N. Perkins Road

Town: Stillwater, OK Post Code: 74075 Country: USA

Name of Authorized Representative: Brunswick Marine in EMEA Inc.

Address: Parc Industriel de Petit‑Rechain

Town: Verviers Post Code: 4800 Country: Belgium

90-8M0050539 511

Name of Notified Body for exhaust emission assessment: Det Norske Veritas AS

Address: Veritasveien 1

Town: Hovik Post Code: 1322 Country: Norway ID Number: 0575

Conformity assessment module used for exhaust emissions:

Conformity assessment module used for noise emissions:

Other Community Directives applied: Electromagnetic Compatibility Directive 2004/108/EC

Description of Engines and Essential Requirements

Engine Type Fuel Type Combustion Cycle

☒ z or sterndrive with integral exhaust ☒ Petrol ☒ 4 stroke

Identification of Engines Covered by This Declaration of Conformity

Name of engine family:

Vazer 100 1A035000 RCD-H-1

Vazer 100 ECT 1A035000 RCD-H-1

3.0 TKS 0W319169 RCD-H-1

3.0 MPI ECT 1A300000 RCD-H-1

4.3 TKS 0W319169 RCD-H-1

4.3 MPI 0W319169 RCD-H-1

4.3 MPI ECT 1A300000 RCD-H-1

SeaCore 4.3 0W319169 RCD-H-1

5.0 MPI 0W319169 RCD-H-1

SeaCore 5.0 0W319169 RCD-H-1

5.0 MPI ECT 1A300000 RCD-H-1

SeaCore 5.0 ECT 1A300000 RCD-H-1

350 MAG 0W319169 RCD-H-1

SeaCore 350 MAG 0W319169 RCD-H-1

350 MAG ECT 1A300000 RCD-H-1

SeaCore 350 MAG ECT 1A300000 RCD-H-1

377 MAG 0W319169 RCD-H-1

SeaCore 377 MAG 0W319169 RCD-H-1

Unique engine identification number: starting serial number

☐ B+C ☐ B+D ☐ B+E ☐ B+F ☐ G ☒ H

A ☐ Aa ☐ G ☐ H ☒

EC Module H certificate number:

*8M0050539*

© 2011 Mercury Marine 350/377 MAG and SeaCore 350/377 MAG—All Models

Page 2

Name of engine family:

377 MAG ECT 1A343300 RCD-H-1

496 MAG 0W319169 RCD-H-1

SeaCore 496 MAG 0W319169 RCD-H-1

496 MAG H.O. 0W319169 RCD-H-1

SeaCore 496 MAG H.O. 0W319169 RCD-H-1

496 MAG ECT 1A300000 RCD-H-1

SeaCore 496 MAG ECT 1A300000 RCD-H-1

496 MAG H.O. ECT 1A300000 RCD-H-1

SeaCore 496 MAG H.O. ECT 1A300000 RCD-H-1

8.2 MAG 1A351489 RCD-H-1

SeaCore 8.2 MAG 1A351489 RCD-H-1

8.2 MAG ECT 1A350340 RCD-H-1

SeaCore 8.2 MAG ECT 1A350340 RCD-H-1

8.2 MAG H.O. 1A351489 RCD-H-1

SeaCore 8.2 MAG H.O. 1A351489 RCD-H-1

8.2 MAG H.O. ECT 1A350340 RCD-H-1

SeaCore 8.2 MAG H.O. ECT 1A350340 RCD-H-1

Unique engine identification number: starting serial number

EC Module H certificate number:

Essential requirements

Annex 1.B—Exhaust Emissions

B.1 engine identification ☐ ☐ ☒

B.2 exhaust emission requirements ☒* ☐ ☐ *EN ISO 8178‑1:1996

B.3 durability ☐ ☐ ☒

B.4 owner's manual ☒ ☐ ☐ ISO 8665:1995

Annex 1.C—Noise Emissions

C.1 Noise emission levels ☒* ☐ ☐ *EN ISO 14509

C.2 Owner's manual ☐ ☒ ☐ Owner's manual

This declaration of conformity is issued under the sole responsibility of the manufacturer. I declare on behalf of the engine manufacturer that the engine(s) mentioned above complies (comply) with all applicable essential requirements in the way specified.

Name / function:

Mark Schwabero, President, Mercury Marine

Regulatory contact: Regulations and Product Safety Department Mercury Marine W6250 W. Pioneer Road Fond du Lac, WI 54936 USA

standards other normative document/ method technical file

Signature and title:

Date and place of issue:

January 28, 2011 Stillwater, Oklahoma, USA

Please specify in more detail (* = mandatory standard)

Identification Record

Please record the following information:

Page 3

Engine Model and Horsepower Engine Serial Number

Transom Assembly Serial Number (Sterndrive) Gear Ratio Sterndrive Unit Serial Number

Transmission Model (Inboard) Gear Ratio Transmission Serial Number

Propeller Number Pitch Diameter

Hull Identification Number (HIN) Purchase Date

Boat Manufacturer Boat Model Length

The serial numbers are the manufacturer’s keys to numerous engineering details that apply to your Mercury MerCruiser® power package. When contacting your Authorized Mercury MerCruiser Dealer about service, always specify model and serial numbers.

The description and specifications contained herein were in effect at the time this guide was approved for printing. Mercury Marine, whose policy is one of continuous improvement, reserves the right to discontinue models at any time, or to change specifications or designs, without notice and without incurring obligation.

Mercury Marine, Fond du Lac, Wisconsin, USA. Printed in USA. © 2011, Mercury Marine Mercury, Mercury Marine, MerCruiser, Mercury MerCruiser, Mercury Racing, Mercury Precision Parts, Mercury Propellers,

Mariner, Quicksilver, Alpha, Axius, Bravo One, Bravo Two, Bravo Three, K‑Planes, MerCathode, OptiMax, Precision Pilot, Pro Max, SeaCore, Skyhook, SmartCraft, Sport‑Jet, Total Command, Verado, VesselView, Zero Effort, Zeus, #1 On The Water, M with Waves logo, Mercury with Waves logo, and SmartCraft logo are all registered trademarks of Brunswick Corporation. Mercury Product Protection logo is a registered service mark of Brunswick Corporation.

Welcome

You have selected one of the finest marine power packages available. It incorporates numerous design features to assure operating ease and durability.

With proper care and maintenance, you will thoroughly enjoy using this product for many boating seasons. To ensure maximum performance and carefree use, we ask that you thoroughly read this manual.

The Operation, Maintenance and Warranty Manual contains specific instructions for using and maintaining your product. We suggest that this manual remain with the product for ready reference whenever you are on the water.

Thank you for purchasing one of our Mercury MerCruiser products. We sincerely hope your boating will be pleasant! Mercury MerCruiser

Warranty Message

The product you have purchased comes with a limited warranty from Mercury Marine; the terms of the warranty are set forth in the Warranty Sections of this manual. The warranty statement contains a description of what is covered, what is not covered, the duration of coverage, how to best obtain warranty coverage, important disclaimers and limitations of damages and other related information. Please review this important information.

Mercury Marine products are designed and manufactured to comply with our own high quality standards, applicable industry standards and regulations, as well as certain emissions regulations. At Mercury Marine every engine is operated and tested before it is boxed for shipment to make sure that the product is ready for use. In addition, certain Mercury Marine products are tested in a controlled and monitored environment, for up to 10 hours of engine run time, in order to verify and make a record of compliance with applicable standards and regulations. All Mercury Marine product, sold as new, receives the applicable limited warranty coverage, whether the engine participated in one of the test programs described above or not.

Read This Manual Thoroughly

IMPORTANT: If you don’t understand any portion of this manual, contact your dealer for a demonstration of actual starting and operating procedures.

Page 4

Notice

Throughout this publication, and on your power package, dangers, warnings, cautions, and notices, accompanied by the

International Hazard Symbol !, may be used to alert the installer/user to special instructions concerning a particular service or operation that may be hazardous if performed incorrectly or carelessly. Observe them carefully.

These safety alerts alone cannot eliminate the hazards they warn of. Strict compliance with these special instructions while performing the service, plus common sense operation, are major accident prevention measures.

DANGER

Indicates a hazardous situation which, if not avoided, will result in death or serious injury.

WARNING

Indicates a hazardous situation which, if not avoided, could result in death or serious injury.

CAUTION

Indicates a hazardous situation which, if not avoided, could result in minor or moderate injury.

NOTICE

Indicates a situation which, if not avoided, could result in engine or major component failure.

IMPORTANT: Identifies information essential to the successful completion of the task.

NOTE: Indicates information that helps in the understanding of a particular step or action.

WARNING

The operator (driver) is responsible for the correct and safe operation of the boat, the equipment aboard and the safety of all occupants aboard. We strongly recommend that the operator read this Operation, Maintenance and Warranty Manual and thoroughly understand the operational instructions for the power package and all related accessories before the boat is used.

WARNING

The engine exhaust from this product contains chemicals known to the state of California to cause cancer, birth defects or other reproductive harm.

Page 5

Section 1 - Warranty

Warranty Registration: United States and Canada....................2

Warranty Registration: Outside the United States and Canada. 2

Transfer of Warranty..................................................................2

Mercury Installation Quality Certification Program.....................3

Mercury Product Protection Plan: United States and Canada...4 Mercury MerCruiser Limited Warranty (Gasoline‑Fueled

Products Only) ..........................................................................4

3‑Year Limited Warranty Against Corrosion..............................6

4‑Year Limited Corrosion Warranty: SeaCore Sterndrive Models

with Gas Engines ......................................................................7

Global Application Warranty Charts—350/377 MAG ECT and

SeaCore 350/377 MAG ECT.....................................................9

Warranty for Consumer Applications..................................9

Warranty for Commercial Applications...............................9

Warranty for Government Applications.............................10

Global Application Warranty Charts—350/377 MAG and

SeaCore 350/377 MAG............................................................10

Warranty for Consumer Applications................................10

Warranty for Commercial Applications.............................11

Warranty for Government Applications.............................11

Emission Control Warranty Information...................................11

Section 2 - Getting to Know Your Power Package

Additional Operation Instructions for Axius Systems ..............22

Identification.............................................................................22

Engine Serial Number Decal MPI.....................................22

Alpha Sterndrive Decal Identification................................22

Alpha Transom Serial Number.........................................23

Bravo Sterndrive Serial Number and Identification...........23

Bravo Transom Serial Number.........................................24

Lanyard Stop Switch................................................................24

Instrumentation—350/377 MAG and SeaCore 350/377 MAG. 25

Digital Gauges....................................................................25

Analog Gauges...................................................................26

Instrumentation—350/377 MAG ECT and SeaCore 350/377

MAG ECT.................................................................................26

VesselView.......................................................................26

Digital Gauges..................................................................27

Analog Gauges.................................................................28

Remote Controls (Non‑DTS Models).......................................28

Remote Controls...............................................................28

Panel Mount Features..................................................29

Console Mount Features..............................................29

Remote Controls (DTS Models)...............................................30

Remote Controls...............................................................30

Panel Mount Features......................................................30

Console Mount Features ‑ Single Engine.........................31

Slim Binnacle Console Mount Features ‑ Single Engine..31

Console Mount Features‑ Dual Engine.............................32

Synchronizing Dual Engines.............................................32

Dual Helm Station Transfer..............................................33

Synchronizing Dual Helms Prior To Station Transfer...33

Zero Effort Features..........................................................34

Dual Console Control with CAN Trackpad Features and

Operation.................................................................................34

Important Information........................................................11

Emission Control Information Label..................................12

Owner Responsibility....................................................13

California Emissions Limited Warranty—350/377 MAG ECT

and SeaCore 350/377 MAG ECT.....................................13

What Is Covered...........................................................13

Duration of Coverage...................................................14

How to Obtain Warranty Coverage...............................14

What Mercury Will Do...................................................14

What Is Not Covered....................................................14

Disclaimers and Limitations..........................................15

California Emission Control Warranty Statement—350/377

MAG ECT and SeCore 350/377 MAG ECT......................15

Your Warranty Rights and Obligations.........................15

Manufacturer's Warranty Coverage..............................15

Owner's Warranty Responsibilities...............................15

U.S. EPA Emissions Limited Warranty.............................15

Emission Control System Components............................15

Emission Certification Star Label.............................................16

Hang Tag.................................................................................18

Dual‑Handle Console Control With CAN Trackpad: Features

and Operation...................................................................34

Synchronizing Engines.....................................................35

Helm Transfer...................................................................36

Synchronizing Helms Prior to Transfer.........................36

Zero Effort Features..........................................................37

Power Trim...............................................................................37

Single Engine Trim/Trailer..................................................38

Dual Engine Trim/Trailer....................................................38

Electrical System Overload Protection—350/377 MAG ECT and

SeaCore 350/377 MAG ECT...................................................38

Electrical System Overload Protection—350/377 MAG and

SeaCore 350/377 MAG............................................................42

Visual and Audio Warning Systems—350/377 MAG ECT and

SeaCore 350/377 MAG ECT...................................................44

Service Engine Light and OBD‑M MIL Kit.........................44

Testing the OBD‑M Malfunction Indicator Lamp (MIL). 44

Audio Warning System.....................................................44

Caution.........................................................................45

Severe..........................................................................45

Testing the Audio Warning System..............................45

Guardian Strategy.............................................................45

Audio Warning System—350/377 MAG and SeaCore350/377

MAG.........................................................................................46

Audio Warning System.....................................................46

Caution.........................................................................46

Severe..........................................................................46

Testing the Audio Warning System..............................46

Engine Guardian Strategy................................................46

90-8M0050539 eng MAY 2011 Page i

Page 6

Section 3 - On the Water

Additional Operation Instructions for Axius Systems .............50

Safe Boating Suggestions...................................................... 50

Carbon Monoxide Exposure...................................................51

Be Alert To Carbon Monoxide Poisoning..........................51

Stay Clear of Exhaust Areas.............................................51

Good Ventilation .............................................................. 51

Poor Ventilation ............................................................... 52

Basic Boat Operation (Non‑DTS Models)...............................52

Launching and Boat Operation........................................ 52

Operation Chart...........................................................52

Starting and Stopping the Engine.................................... 53

Starting the Engine......................................................53

Stopping the Engine....................................................53

Starting the Engine After It Has Been Stopped While In

Gear................................................................................ 54

Throttle‑Only Operation...................................................54

Trailering the Boat...........................................................54

Freezing Temperature Operation....................................54

Drain Plug and Bilge Pump............................................. 54

Basic Boat Operation (DTS Models)...................................... 54

Launching and Boat Operation........................................ 54

Operation Chart...........................................................54

Starting and Stopping the Engine.................................... 55

Starting the Engine......................................................55

Stopping the Engine....................................................56

Throttle‑Only Operation...................................................56

Trailering the Boat...........................................................56

Freezing Temperature Operation....................................56

Drain Plug and Bilge Pump............................................. 57

Protecting People in the Water...............................................57

While You Are Cruising.....................................................57

While Boat Is Stationary................................................... 57

High‑Speed and High‑Performance Operation....................... 57

Passenger Safety in Pontoon Boats and Deck Boats............ 57

Boats Having an Open Front Deck...................................57

Boats With Front‑Mounted, Raised Pedestal Fishing Seats

..........................................................................................58

Wave and Wake Jumping.......................................................58

Impact with Underwater Hazards........................................... 58

Drive Unit Impact Protection.............................................59

Operating with Low Water Inlets in Shallow Water................. 59

Conditions Affecting Operation...............................................59

Weight Distribution (Passengers and Gear) Inside the

Boat.................................................................................59

The Bottom of the Boat................................................... 60

Cavitation........................................................................ 60

Ventilation........................................................................60

Elevation and Climate..................................................... 60

Propeller Selection.......................................................... 60

Getting Started....................................................................... 61

20‑Hour Break‑In Period................................................. 61

After the Break‑In Period.................................................61

End of First Season Checkup..........................................61

Section 4 - Specifications

350/377 MAG ECT and SeaCore 350/377 ECT—

Specifications......................................................................... 64

Fuel Requirements..........................................................64

Fuel Ratings................................................................64

Using Reformulated (Oxygenated) Gasoline (USA

Only)............................................................................64

Gasoline Containing Alcohol.......................................64

Engine Oil........................................................................64

350 MAG ECT, SeaCore 350 MAG ECT........................ 65

377 MAG ECT, SeaCore 377 MAG ECT........................ 66

350/377 MAG and SeaCore 350/377 MAG—Specifications.. 66

Fuel Requirements..........................................................66

Fuel Ratings................................................................66

Using Reformulated (Oxygenated) Gasolines (USA

Only)............................................................................67

Section 5 - Maintenance

Additional Operation Instructions for Axius Systems .............73

Owner/Operator Responsibilities............................................73

Dealer Responsibilities...........................................................73

Maintenance...........................................................................73

Do‑It‑Yourself Maintenance Suggestions...............................73

Inspection............................................................................... 74

Gasolines Containing Alcohol..................................... 67

Engine Oil........................................................................67

350 MAG, SeaCore 350 MAG.........................................68

377 MAG, SeaCore 377 MAG.........................................69

Fluid Specifications.................................................................69

Engine—350/377 MAG ECT and SeaCore 350/377 MAG

ECT................................................................................. 69

Engine—350/377 MAG and SeaCore 350/377 MAG......69

Alpha Sterndrive..............................................................70

Bravo Sterndrives............................................................70

Power‑Assisted Steering and Power Trim Fluids............70

Approved Power‑Assisted Steering Fluids..................70

Approved Power Trim Fluids.......................................70

Maintenance Schedules—350/377 MAG ECT and SeaCore

350/377 MAG ECT................................................................. 74

Routine Maintenance...................................................... 74

Scheduled Maintenance..................................................75

Maintenance Schedules—350/377 MAG and SeaCore 350/377

MAG....................................................................................... 76

Routine Maintenance...................................................... 76

Page ii 90-8M0050539 eng MAY 2011

Page 7

Scheduled Maintenance...................................................77

Maintenance Log.....................................................................78

Engine Oil—350/377 MAG ECT and SeaCore 350/377 MAG

ECT..........................................................................................79

Checking...........................................................................79

Filling................................................................................79

Changing Oil and Filter.....................................................80

Engine Oil Drain Pump.....................................................80

Changing Filter.................................................................80

Engine Oil—350/377 MAG and SeaCore 350/377 MAG.........81

Checking...........................................................................81

Filling................................................................................81

Changing Oil and Filter.....................................................82

Engine Oil Drain Pump.....................................................82

Changing Filter.................................................................82

Power Steering Fluid................................................................83

Power Steering Fluid—350/377 MAG ECT and SeaCore

350/377 MAG ECT...........................................................83

Checking.......................................................................83

Filling............................................................................83

Changing......................................................................83

Power Steering Fluid—350/377 MAG and SeaCore 350/377

MAG..................................................................................83

Checking.......................................................................83

Filling............................................................................84

Changing......................................................................84

Engine Coolant—350/377 MAG ECT and SeaCore 350/377 MAG

ECT..........................................................................................84

Checking...........................................................................84

Filling................................................................................85

Changing .........................................................................86

Engine Coolant—350/377 MAG and SeaCore 350/377 MAG. 86

Checking............................................................................86

Filling..................................................................................87

Changing ...........................................................................87

Alpha Sterndrive Gear Lube....................................................87

Checking............................................................................88

Filling..................................................................................88

Changing............................................................................88

Sterndrive Gear Lube...............................................................90

Checking...........................................................................90

Filling................................................................................90

Changing..........................................................................90

Power Trim Fluid......................................................................92

Checking............................................................................92

Filling..................................................................................92

Changing............................................................................93

Battery......................................................................................93

Multiple EFI Engine Battery Precautions..........................93

Scheduled Maintenance Specifically for 350/377 MAG ECT and

SeaCore 350/377 MAG ECT ..................................................93

Cleaning the Flame Arrestor.............................................93

Positive Crankcase Ventilation Valve (PCV)................94

Changing...................................................................94

Cleaning the IAC Muffler...................................................95

Scheduled Maintenance Specifically for 350/377 MAG and

SeaCore 350/377 MAG............................................................96

Cleaning the Flame Arrestor.............................................96

Positive Crankcase Ventilation Valve (PCV)................97

Changing...................................................................97

Water‑Separating Fuel Filter (MPI)..........................................97

Water‑Separating Fuel Filter.............................................97

GEN II Models..................................................................97

Removal.......................................................................97

Installation....................................................................98

GEN III Models.................................................................98

Removal.......................................................................98

Installation....................................................................99

Lubrication...............................................................................99

Steering System...............................................................99

Throttle Cable.................................................................101

Shift Cable ‑ Typical........................................................101

Sterndrive U‑joint Shaft Splines And O‑rings (Sterndrive Unit

Removed).......................................................................102

Engine Coupler...............................................................102

Driveshaft Extension Models..........................................103

Propellers...............................................................................103

Propeller Repair..............................................................103

Alpha Propeller Removal................................................103

Alpha Propeller Installation.............................................103

Bravo One Propeller Removal........................................104

Bravo One Propeller Installation.....................................104

Bravo Two Propeller Removal........................................105

Bravo Two Propeller Installation.....................................106

Bravo Three Propeller Removal.....................................106

Bravo Three Propeller Installation..................................107

Serpentine Drive Belt.............................................................109

Checking..........................................................................109

Replacing Belt and/or Adjusting Tension.........................109

Corrosion Protection..............................................................110

Corrosion Information.....................................................110

Maintaining Ground Circuit Continuity............................110

MerCathode System Battery Requirements...................110

Anodes and MerCathode System Locations..................110

Checking the Quicksilver MerCathode System..............111

Power Package Exterior Surfaces..................................112

Boat Bottom Care...........................................................112

Anti‑fouling Paint.............................................................112

Sterndrive Surface Care.................................................114

Flushing the Power Package—Alpha....................................114

Flushing Attachments.......................................................115

Sterndrive Water Pickups.................................................115

Flushing the Power Package—Bravo....................................116

General Information........................................................116

Flushing the Power Package..........................................116

Flushing Attachments.................................................116

Sterndrive Water Pickups...........................................117

Alternative Water Pickups..........................................118

SeaCore Power Package Flushing Procedure...............120

Models Using The Sterndrive Water Pickup...............120

Section 6 - Storage

Cold Weather or Extended Storage.......................................124

Preparing Power Package for Storage...........................124

Engine and Fuel System Preparation.........................124

Draining the Seawater System—350/377 MAG ECT and

SeaCore 350 MAG ECT........................................................125

90-8M0050539 eng MAY 2011 Page iii

Draining the Seawater System.......................................125

Page 8

Drain System Identification............................................125

Air Actuated Single Point Drain System....................126

Manual Single Point Drain System (Alpha)...............126

Three Point Manual Drain System............................127

Multi‑Point Drain (MPD) System...............................127

Air Actuated Single Point Drain System........................128

Boat in the Water......................................................128

Boat out of the Water................................................130

Manual Single‑Point Drain System (Alpha)...................132

Boat in the Water......................................................132

Boat out of the Water................................................133

Three‑Point Manual Drain System................................133

Boat in the Water......................................................133

Boat out of the Water................................................134

Draining the Sterndrive..................................................135

Draining the Seawater System—350/377 MAG and SeaCore

350/377 MAG.......................................................................136

Draining the Seawater System......................................136

Drain System Identification............................................136

Section 7 - Troubleshooting

Air Actuated Single Point Drain System....................136

Manual Single Point Drain System............................137

Three Point Manual Drain System............................137

Multi‑Point Drain (MPD) System...............................137

Air Actuated Single Point Drain System........................138

Boat in the Water......................................................138

Boat out of the Water................................................140

Manual Single‑Point Drain System................................142

Boat in the Water......................................................142

Boat out of the Water................................................142

Three‑Point Manual Drain System................................143

Boat in the Water......................................................143

Boat out of the Water................................................144

Multi‑Point Drain (MPD) System...................................145

Draining the Sterndrive..................................................146

Draining Water From the Gen III Cool Fuel Module.............147

Battery Storage.....................................................................148

Recommissioning the Power Package.................................148

Diagnosing EFI Problems.....................................................150

Diagnosing DTS Problems...................................................150

Additional Operation Instructions for Axius Systems ...........150

Engine Guardian System......................................................150

Troubleshooting Charts........................................................150

Starter Motor Will Not Crank Engine, or Cranks Slowly 150

Engine Will Not Start or Is Hard to Start........................150

Engine Runs Rough, Misses, or Backfires....................151

Poor Performance.........................................................151

Excessive Engine Temperature....................................151

Section 8 - Customer Assistance Information

Owner Service Assistance....................................................156

Local Repair Service.......................................................156

Service Away From Home..............................................156

Stolen Power Package...................................................156

Attention Required After Submersion.............................156

Replacement Service Parts............................................156

Parts and Accessories Inquiries................................156

Section 9 - Checklists

Insufficient Engine Temperature...................................151

Low Engine Oil Pressure...............................................152

Battery Will Not Recharge.............................................152

Remote Control Is Difficult to Move, Has Excessive Play, or

Makes Unusual Sounds................................................152

Steering Wheel Jerks or Is Difficult to Turn...................152

Power Trim Does Not Operate (Motor Does Not

Operate)........................................................................152

Power Trim Does Not Operate (Motor Operates but

Sterndrive Unit Does Not Move)....................................153

Resolving a Problem.......................................................156

Contact Information for Mercury Marine Customer Service

........................................................................................157

Ordering Literature...............................................................157

United States and Canada..............................................157

Outside the United States and Canada..........................158

Predelivery Inspection (PDI).................................................160 Customer Delivery Inspection (CDI).....................................162

Page iv 90-8M0050539 eng MAY 2011

Page 9

Section 1 - Warranty

Table of Contents

Warranty Registration: United States and Canada................. 2

Warranty Registration: Outside the United States and Canada

................................................................................................ 2

Transfer of Warranty............................................................... 2

Mercury Installation Quality Certification Program................. 3

Mercury Product Protection Plan: United States and Canada

................................................................................................ 4

Mercury MerCruiser Limited Warranty (Gasoline‑Fueled

Products Only) ....................................................................... 4

3‑Year Limited Warranty Against Corrosion........................... 6

4‑Year Limited Corrosion Warranty: SeaCore Sterndrive

Models with Gas Engines ...................................................... 7

Global Application Warranty Charts—350/377 MAG ECT and

SeaCore 350/377 MAG ECT.................................................. 9

Warranty for Consumer Applications...............................9

Warranty for Commercial Applications............................9

Warranty for Government Applications..........................10

Global Application Warranty Charts—350/377 MAG and

SeaCore 350/377 MAG........................................................ 10

Warranty for Consumer Applications.............................10

Warranty for Commercial Applications..........................11

Warranty for Government Applications..........................11

Emission Control Warranty Information................................ 11

Important Information.....................................................11

Emission Control Information Label...............................12

Owner Responsibility ............................................. 13

California Emissions Limited Warranty—350/377 MAG

ECT and SeaCore 350/377 MAG ECT..........................13

What Is Covered .................................................... 13

Duration of Coverage ............................................ 14

How to Obtain Warranty Coverage ....................... 14

What Mercury Will Do ............................................ 14

What Is Not Covered ............................................. 14

Disclaimers and Limitations ................................... 15

California Emission Control Warranty Statement—350/377

MAG ECT and SeCore 350/377 MAG ECT...................15

Your Warranty Rights and Obligations .................. 15

Manufacturer's Warranty Coverage ...................... 15

Owner's Warranty Responsibilities ........................ 15

U.S. EPA Emissions Limited Warranty..........................15

Emission Control System Components.........................15

Emission Certification Star Label.......................................... 16

Hang Tag.............................................................................. 18

90-8M0050539 eng MAY 2011 Page 1

Page 10

Section 1 - Warranty

Warranty Registration: United States and Canada

To ensure that your warranty coverage begins promptly, your selling dealer should fill out the Warranty Registration Card completely and mail it to the factory immediately upon sale of the new product.

The Warranty Registration Card identifies the name and address of the original purchaser, product model and serial number(s), date of sale, type of use and selling dealer’s code, name, and address. The dealer also certifies that you are the original purchaser and user of the product. A temporary Owner Warranty Registration Card will be presented to you when you purchase the product.

Upon receipt of the Warranty Registration Card at the factory, Mercury MerCruiser will send you an owner resource guide that includes your warranty registration confirmation. If you do not receive your owner resource guide within 60 days from date of new product sale, please contact your selling dealer.

Because of your selling dealer’s ongoing interest in your satisfaction, the product should be returned to him for warranty service. The product warranty is not effective until the product is registered at the factory.

NOTE: Registration lists must be maintained by the factory and dealer on marine products sold in the United States in the event that a safety recall notification under the Federal Boat Safety Act is required.

You may change your address at any time, including at time of warranty claim, by calling Mercury MerCruiser or sending a letter or fax to Mercury MerCruiser’s warranty registration department with your name, old address, new address, and engine serial number. Your dealer can also process this change of information.

United States customers or dealers may contact: Mercury Marine Attn: Warranty Registration Department W6250 Pioneer Road P.O. Box 1939 Fond du Lac, WI 54936-1939 920 929 5054 Fax 920 907 6663 registration_support@mercmarine.com

Canadian customers or dealers may contact: Mercury Marine Canada Limited 2395 Meadowpine Blvd. Mississauga, Canada, L5N 7W6 Fax 1 800 663 8334

Warranty Registration: Outside the United States and Canada

To ensure that your warranty coverage begins promptly, your selling dealer should fill out the warranty registration card completely and mail it to the distributor responsible for administering the warranty registration and claim program for your area.

The warranty registration card identifies your name and address, product model and serial numbers, date of sale, type of use, and the selling distributor’s and dealer’s code number, name, and address. The distributor or dealer also certifies that you are the original purchaser and user of the product. A copy of the warranty registration card, designated as the purchaser’s copy, MUST be given to you immediately after the card has been completely filled out by the selling distributor or dealer. This card represents your factory registration identification. Keep the card; if you ever need warranty service on this product, your dealer may ask you for the warranty registration card to verify date of purchase and to use the information on the card to prepare the warranty claim forms.

In some countries, the distributor will issue a permanent (plastic) warranty registration card to you within 30 days after receiving the factory copy of the warranty registration card from your distributor or dealer. If you receive a plastic warranty registration card, you may discard the purchaser’s copy that you received from the distributor or dealer when you purchased the product. Ask your distributor or dealer if this plastic card program applies to you. For further information concerning the warranty registration card and its relationship to warranty claim processing, refer to the International Warranty. See Table of Contents.

NOTE: Registration lists must be maintained by the factory and dealer on marine products sold in the United States in the event of a safety recall notification under the Federal Boat Safety Act.

Transfer of Warranty

The limited warranty is transferable to a subsequent purchaser, but only for the remainder of the unused portion of the limited warranty. This will not apply to products used for commercial applications.

To transfer the warranty to the subsequent owner, send or fax a copy of the bill of sale or purchase agreement, new owner’s name, address and engine serial number to Mercury Marine’s warranty registration department. In the United States mail to:

Page 2 90-8M0050539 eng MAY 2011

Page 11

Section 1 - Warranty

Mercury Marine Attn: Warranty Registration Department W6250 W. Pioneer Road P.O. Box 1939 Fond du Lac, WI 54936-1939 920-929-5054 Fax 920-929-5893

In Canada mail to: Mercury Marine Canada Limited 2395 Meadowpine Blvd. Mississauga, Canada, L5N 7W6 Fax 1-800-663-8334

Upon processing the transfer of warranty, Mercury Marine will send registration verification to the new owner of the product by mail.

There is no charge for this service. For products purchased outside the United States and Canada, contact the distributor in your country, or the distributor closest

to you.

Mercury Installation Quality Certification Program

15502

Mercury MerCruiser products installed by a Mercury Installation Quality Certified Manufacturer are Installation Quality certified products and may receive an additional one (1) year of limited warranty coverage.

The Installation Quality Certification program was developed to recognize MerCruiser boatbuilder customers who have achieved higher manufacturing standards. It is the first and only comprehensive manufacturer‑installation certification program in the industry.

The program has three goals:

1. To enhance overall product quality.

2. To improve the boat ownership experience.

3. To enhance overall customer satisfaction. The certification process is designed to review all facets of manufacturing and engine installation. The program is composed of

design, manufacturing and installation review stages with which builders must comply. Certification applies leading‑edge methodologies to create:

• Efficiencies and best practices specific to engine installation.

• World‑class assembly and component specifications.

• Efficient installation processes.

• Industry standard end‑of‑line test procedures

Boat builders that successfully complete the program and meet all certification requirements earn Installation Quality System Certified Manufacturer status and receive an additional one (1) year of Mercury limited factory warranty coverage on all MerCruiser‑powered boats that are registered on and after the boat builder's certification date for all worldwide registrations.

90-8M0050539 eng MAY 2011 Page 3

Page 12

Section 1 - Warranty

Mercury has designated a section of our Website to promote the Installation Quality Certification Program and communicate its benefits to consumers. For a current list of MerCruiser‑powered boat brands that have earned Installation Quality Certification, visit www.mercurymarine.com/mercruiser_warranty.

Mercury Product Protection Plan: United States and Canada

IMPORTANT: Certain performance products, triple engine installations, and commercial applications are excluded from the Mercury Product Protection Plan program.

The Mercury Product Protection Plan provides coverage against unexpected mechanical and electrical breakdowns that may occur beyond the standard limited warranty. The plan may be purchased up to twelve months after the original engine registration date and is available with terms ranging from one to five years.

The optional Mercury Product Protection Plan is the only factory authorized extended warranty plan available for your engine. See your participating Mercury MerCruiser dealer for complete program details.

Mercury MerCruiser Limited Warranty (Gasoline‑Fueled Products Only)

Mercury MerCruiser Limited Warranty (Gasoline-Fueled Products Only)

What is Covered

Mercury Marine warrants its new products to be free of defects in material and workmanship during the period described following.

Duration of Coverage

Warranty Period for Recreational Use

The warranty period begins on the date the product is first sold to a recreational‑use retail purchaser or the date on which the product is first put into service, whichever occurs first. Products installed by an Installation Quality Certified Installer receive one (1) year of additional warranty coverage. The repair or replacement of parts or the performance of service under this warranty does not extend the life of this warranty beyond its original expiration date. The warranty period is specific to the model covered; see your model for the base coverage period:

Coverage for Horizon Inboard Models, and Vazer 100 Sterndrive Models

The Limited Warranty for Horizon Inboard Models and Vazer 100 Models is four (4) years when installed by an Installation Quality Certified Installer or three (3) years for non‑certified installations.

Coverage for SeaCore Sterndrive Models

The Limited Warranty for SeaCore Sterndrive Models is four (4) years when installed by an Installation Quality Certified Installer or three (3) years for non‑certified installations.

Coverage for Tow Sports Inboard Models

The Limited Warranty for Tow Sports 5.7 TKS models is two (2) years when installed by an Installation Quality Certified Installer or one (1) year for non‑certified installations. The Limited Warranty for all other Tow Sports Inboard models is three (3) years when installed by an Installation Quality Certified Installer or two (2) years for non‑certified installations.

Coverage for All Other Models

The Limited Warranty for all other Gasoline Sterndrive and Inboard models except those described above is two (2) years when installed by an Installation Quality Certified Installer or one (1) year for non‑certified installations.

Warranty Period for Commercial Use

The warranty period begins on the date the product is first sold to a commercial‑use retail purchaser or the date on which the product is first put into service, whichever occurs first. Commercial users of these products receive warranty coverage for either one (1) year from the date of first retail sale or the accumulation of 500 hours of operation, whichever occurs first. Commercial use is defined as any work‑related or employment‑related use of the product, or any use of the product that generates income for any part of the warranty period, even if the product is only occasionally used for such purposes. The repair or replacement of parts or the performance of service under this warranty does not extend the life of this warranty beyond its original expiration date.

Transfer of Coverage

Unexpired warranty coverage can be transferred from one recreational‑use customer to a subsequent recreational‑use customer upon proper reregistration of the product. Unexpired warranty coverage cannot be transferred either to or from a commercial‑use customer.

Page 4 90-8M0050539 eng MAY 2011

Page 13

Section 1 - Warranty

Termination of Coverage

Warranty coverage is terminated for used product obtained in any of the following ways:

• Repossession from a retail customer

• Purchase at auction

• Purchase from a salvage yard

• Purchase from an insurance company that obtained the product as a result of an insurance claim

Conditions That Must Be Met in Order to Obtain Warranty Coverage

Warranty coverage is available only to retail customers that purchase from a dealer authorized by Mercury Marine to distribute the product in the country in which the sale occurred, and then only after the pre‑delivery inspection process specified by Mercury Marine is completed and documented. Warranty coverage becomes available upon proper registration of the product by the authorized dealer. Inaccurate warranty registration information regarding recreational use or subsequent change of use from recreational to commercial (unless properly reregistered) may void the warranty at the sole discretion of Mercury Marine. Routine maintenance must be performed according to the maintenance schedule in the Operation, Maintenance & Warranty manual in order to obtain warranty coverage. Mercury Marine reserves the right to make any warranty coverage contingent upon proof of proper maintenance.

What Mercury Marine Will Do

Mercury Marine's sole and exclusive obligation under this warranty is limited to, at our option, repairing a defective part, replacing such part or parts with new or Mercury Marine certified remanufactured parts, or refunding the purchase price of the Mercury Marine product. Mercury Marine reserves the right to improve or modify products from time to time without assuming an obligation to modify products previously manufactured.

How to Obtain Warranty Coverage

The customer must provide Mercury Marine with a reasonable opportunity to repair and reasonable access to the product for warranty service. Warranty claims shall be made by delivering the product for inspection to a Mercury Marine dealer authorized to service the product. If the purchaser cannot deliver the product to such a dealer, written notice must be given to Mercury Marine. Mercury Marine will then arrange for the inspection and any covered repair. The purchaser in that case shall pay for all related transportation charges and travel time. If the service provided is not covered by this warranty, the purchaser shall pay for all related labor and material and any other expenses associated with that service. The purchaser shall not, unless requested by Mercury Marine, ship the product or parts of the product directly to Mercury Marine. Proof of registered ownership must be presented to the dealer at the time warranty service is requested in order to obtain coverage.

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Section 1 - Warranty

What Is Not Covered

This limited warranty does not cover the following:

• Routine maintenance items

• Adjustments

• Normal wear and tear

• Damage caused by abuse

• Abnormal use

• Use of a propeller or gear ratio that does not allow the engine to run in its recommended RPM range (see the Operation, Maintenance & Warranty manual)

• Operation of the product in a manner inconsistent with the recommended operation and duty cycle section of the Operation, Maintenance & Warranty manual

• Neglect

• Accident

• Submersion

• Improper installation (proper installation specifications and techniques are set forth in the installation instructions for the product)

• Improper service

• Use of an accessory or part that was not manufactured or sold by Mercury Marine and that damages the Mercury product

• Jet pump impellers and liners

• Operation with fuels, oils, or lubricants that are not suitable for use with the product (see the Operation, Maintenance & Warranty manual)

• Alteration or removal of parts

• Water entering the engine through the fuel intake, air intake, or exhaust system or damage to the product from insufficient cooling water caused by blockage of the cooling system by a foreign body

• Running the engine out of water

• Mounting the engine too high on the transom

• Operating the boat with the engine over trimmed

Use of the product for racing or other competitive activity, or operating with a racing‑type lower unit at any point, even by a previous owner of the product, voids the warranty. Expenses related to haul‑out, launch, towing, storage, telephone, rental, inconvenience, slip fees, insurance coverage, loan payments, loss of time, loss of income, or any other type of incidental or consequential damages are not covered by this warranty. Also, expenses associated with the removal or replacement of boat partitions or other material in order to gain access to the product are not covered by this warranty. No individual or entity, including Mercury Marine authorized dealers, has been given authority by Mercury Marine to make any affirmation, representation, or warranty regarding the product, other than those contained in this limited warranty. If such affirmation, representation, or warranty is made, it shall not be enforceable against Mercury Marine.

DISCLAIMERS AND LIMITATIONS THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE EXPRESSLY DISCLAIMED. TO THE EXTENT THAT THEY CANNOT BE DISCLAIMED, THE IMPLIED WARRANTIES ARE LIMITED IN DURATION TO THE LIFE OF THE EXPRESS WARRANTY. INCIDENTAL AND CONSEQUENTIAL DAMAGES ARE EXCLUDED FROM COVERAGE UNDER THIS WARRANTY. SOME STATES/COUNTRIES DO NOT ALLOW FOR THE DISCLAIMERS, LIMITATIONS AND EXCLUSIONS IDENTIFIED ABOVE. AS A RESULT, THEY MAY NOT APPLY TO YOU. THIS WARRANTY GIVES YOU SPECIFIC LEGAL RIGHTS, AND YOU MAY ALSO HAVE OTHER LEGAL RIGHTS WHICH VARY FROM STATE TO STATE AND COUNTRY TO COUNTRY.

3‑Year Limited Warranty Against Corrosion

3-YEAR LIMITED WARRANTY AGAINST CORROSION

What Is Covered

Mercury Marine warrants that each new Mercury, Mariner, Mercury Racing, Sport Jet, M2 Jet Drive, Tracker by Mercury Marine Outboard, MerCruiser Inboard or Sterndrive engine (Product) will not be rendered inoperative as a direct result of corrosion for the period of time described below.

Duration of Coverage

Page 6 90-8M0050539 eng MAY 2011

Page 15

This limited corrosion warranty provides coverage for three (3) years from either the date the product is first sold, or the date on which the product is first put into service, whichever occurs first. The repair and replacement of parts, or the performance of service under this warranty does not extend the life of this warranty beyond its original expiration date. Unexpired warranty coverage can be transferred to subsequent (noncommercial use) purchaser upon proper re‑registration of the product. Warranty coverage is terminated for used product repossessed from a retail customer, purchased at auction, from a salvage yard, or from an insurance company that obtained the product as a result of an insurance claim.

Condition That Must Be Met in Order to Obtain Warranty Coverage

Warranty coverage is available only to retail customers that purchase from a dealer authorized by Mercury Marine to distribute the product in the country in which the sale occurred, and then only after the Mercury Marine specified pre‑delivery inspection process is completed and documented. Warranty coverage becomes available upon proper registration of the product by the authorized dealer. Corrosion prevention devices specified in the Operation, Maintenance & Warranty manual must be in use on the boat, and routine maintenance outlined in the Operation, Maintenance & Warranty manual must be timely performed (including without limitation the replacement of sacrificial anodes, use of specified lubricants, and touch‑up of nicks and scratches) in order to maintain warranty coverage. Mercury Marine reserves the right to make warranty coverage contingent upon proof of proper maintenance.

What Mercury Will Do

Mercury's sole and exclusive obligation under this warranty is limited to, at our option, repairing a corroded part, replacing such part or parts with new or Mercury Marine certified re‑manufactured parts, or refunding the purchase price of the Mercury product. Mercury reserves the right to improve or modify products from time to time without assuming an obligation to modify products previously manufactured.

How to Obtain Warranty Coverage

The customer must provide Mercury with a reasonable opportunity to repair, and reasonable access to the product for warranty service. Warranty claims shall be made by delivering the product for inspection to a Mercury dealer authorized to service the product. If purchaser cannot deliver the product to such a dealer, written notice must be given to Mercury. We will then arrange for the inspection and any covered repair. Purchaser in that case shall pay for all related transportation charges and/or travel time. If the service provided is not covered by this warranty, purchaser shall pay for all related labor and material, and any other expenses associated with that service. Purchaser shall not, unless requested by Mercury, ship the product or parts of the product directly to Mercury. Proof of registered ownership must be presented to the dealer at the time warranty service is requested in order to obtain coverage.

What Is Not Covered

This limited warranty does not cover electrical system corrosion; corrosion resulting from damage, corrosion which causes purely cosmetic damage, abuse or improper service; corrosion to accessories, instruments, steering systems; corrosion to factory installed jet drive unit; damage due to marine growth; product sold with less than a one year limited Product warranty; replacement parts (parts purchased by the Customer); products used in a commercial application. Commercial use is defined as any work or employment related use of the product, or any use of the product which generates income, for any part of warranty period, even if the product is only occasionally used for such purposes.

Section 1 - Warranty

4‑Year Limited Corrosion Warranty: SeaCore Sterndrive Models with Gas Engines

4-YEAR LIMITED CORROSION WARRANTY: SEACORE STERNDRIVE MODELS WITH GAS ENGINES

What Is Covered

Mercury Marine warrants that each new MerCruiser SeaCore engine, transom, and sterndrive package will not be rendered inoperative as a direct result of corrosion for the period of time described below.

Duration of Coverage

90-8M0050539 eng MAY 2011 Page 7

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Section 1 - Warranty

This limited corrosion warranty provides coverage for four (4) years from either the date on which the MerCruiser SeaCore engine, transom, and sterndrive package is first sold or the date on which it is first put into service, whichever occurs first. The repair or replacement of parts or the performance of service under this warranty does not extend the life of this warranty beyond its original expiration date. Unexpired warranty coverage can be transferred to a subsequent (noncommercial‑use) purchaser upon proper reregistration of the product. Warranty coverage is terminated for used product obtained in any of the following ways:

• Repossession from a retail customer

• Purchase at auction

• Purchase from a salvage yard

• Purchase from an insurance company that obtained the product as a result of an insurance claim

Condition That Must Be Met in Order to Obtain Warranty Coverage

Warranty coverage is available only to retail customers that purchase from a dealer authorized by Mercury Marine to distribute the product in the country in which the sale occurred, and then only after the pre‑delivery inspection process specified by Mercury Marine is completed and documented. Warranty coverage becomes available upon proper registration of the product by the authorized dealer. Corrosion‑prevention devices specified in the Operation, Maintenance & Warranty manual must be in use on the boat, and routine maintenance outlined in the Operation, Maintenance & Warranty manual must be performed according to the maintenance schedule in the Operation, Maintenance & Warranty manual (including without limitation the replacement of sacrificial anodes, use of specified lubricants, and touch‑up of nicks and scratches) in order to maintain warranty coverage. Mercury Marine reserves the right to make warranty coverage contingent upon proof of proper maintenance.

What Mercury Marine Will Do

Mercury's sole and exclusive obligation under this warranty is limited to, at our option, repairing a corroded part, replacing such part or parts with new or Mercury Marine certified remanufactured parts, or refunding the purchase price of the Mercury product. Mercury reserves the right to improve or modify products from time to time without assuming an obligation to modify products previously manufactured.

How to Obtain Warranty Coverage

The customer must provide Mercury Marine with a reasonable opportunity to repair and reasonable access to the product for warranty service. Warranty claims shall be made by delivering the product for inspection to a Mercury Marine dealer authorized to service the product. If the purchaser cannot deliver the product to such a dealer, written notice must be given to Mercury Marine. Mercury Marine will then arrange for the inspection and any covered repair. The purchaser in that case shall pay for all related transportation charges and/or travel time. If the service provided is not covered by this warranty, the purchaser shall pay for all related labor and material, and any other expenses associated with that service. The purchaser shall not, unless requested by Mercury Marine, ship the product or parts of the product directly to Mercury Marine. Proof of registered ownership must be presented to the dealer at the time warranty service is requested in order to obtain coverage.

What Is Not Covered

This limited warranty does not cover the following:

• Electrical system corrosion

• Corrosion resulting from damage

• Corrosion that causes purely cosmetic damage

• Abuse or improper service

• Corrosion to accessories, instruments, and steering systems

• Corrosion to a factory‑installed jet drive unit

• Damage due to marine growth

• Replacement parts (parts purchased by the customer)

• Product sold with less than a one‑year limited product warranty

• Products used in a commercial application. Commercial use is defined as any work or employment related use of the product, or any use of the product which generates income, for any part of warranty period, even if the product is only occasionally used for such purposes.

Page 8 90-8M0050539 eng MAY 2011

Page 17

Section 1 - Warranty

Global Application Warranty Charts—350/377 MAG ECT and SeaCore 350/377 MAG ECT

Warranty for Consumer Applications

Engine Model Region

The Americas (excluding Brazil)

Brazil

Europe, Middle East, Africa 350 MAG EC 377 MAG EC

SeaCore 350 MAG EC SeaCore 377 MAG EC

Australia, New Zealand

Japan

South Pacific

Other Asia

The Americas (excluding Brazil)

Brazil

Europe, Middle East, Africa

Australia, New Zealand

Japan

South Pacific

Other Asia

Warranty for Commercial Applications

Standard Factory Limited Warranty by

Certification Status of Boat Manufacturer

Not Certified

1 year 2 years 3 years

2 years 2 years 2 years

2 years 3 years 3 years

2 years 2 years 3 years

1 year 1 year 1 year

2 years 2 years 2 years

1 year 1 year 1 year

3 years 4 years 4 years

2 years 2 years 2 years

3 years 4 years 4 years

3 years 3 years 4 years

1 year 1 year 1 year

2 years 2 years 2 years

1 year 1 year 1 year

Installation Quality

Certified

Limited Corrosion

Consumer

Warranty

Engine Model

350 MAG EC 377 MAG EC SeaCore 350 MAG EC SeaCore 377 MAG EC

Region

The Americas (excluding Brazil)

Brazil

Europe, Middle East, Africa

Australia, New Zealand

Japan

South Pacific

Other Asia

Standard Factory Limited Warranty by

Certification Status of Boat Manufacturer

Not Certified

1 year 1 year 1 year

2 years 2 years 2 years

1 year or 500 hours 1 year or 500 hours 1 year or 500 hours

Installation Quality

Certified

Commercial

Limited Corrosion

Warranty

90-8M0050539 eng MAY 2011 Page 9

Page 18

Section 1 - Warranty

Warranty for Government Applications

Standard Factory Limited Warranty by

Engine Model Region

350 MAG EC 377 MAG EC SeaCore 350 MAG EC SeaCore 377 MAG EC

The Americas (excluding Brazil)

Brazil

Europe, Middle East, Africa

Australia, New Zealand

Japan

South Pacific

Other Asia

Certification Status of Boat

Manufacturer

Not Certified

1 year 1 year 3 years

2 years 2 years 2 years

1 year or 500

hours

Installation

Quality Certified

1 year or 500

hours

Government

Limited Corrosion

Warranty

1 year or 500

hours

Global Application Warranty Charts—350/377 MAG and SeaCore 350/377 MAG

Warranty for Consumer Applications

Standard Factory Limited Warranty by

Engine Model

350 MAG 377 MAG

SeaCore 350 MAG SeaCore 377 MAG

Region

The Americas (excluding Brazil)

Brazil

Europe, Middle East, Africa

Australia, New Zealand

Japan

South Pacific

Other Asia

The Americas (excluding Brazil)

Brazil

Europe, Middle East, Africa

Australia, New Zealand

Japan

South Pacific

Other Asia

Certification Status of Boat Manufacturer

Not Certified

1 year 2 years 3 years

2 years 2 years 2 years

2 years 3 years 3 years

2 years 2 years 3 years

1 year 1 year 1 year

2 years 2 years 2 years

1 year 1 year 1 year

3 years 4 years 4 years

2 years 2 years 2 years

3 years 4 years 4 years

3 years 3 years 4 years

1 year 1 year 1 year

2 years 2 years 2 years

1 year 1 year 1 year

Installation Quality

Certified

Consumer Limited

Corrosion Warranty

Page 10 90-8M0050539 eng MAY 2011

Page 19

Warranty for Commercial Applications

Engine Model Region

The Americas (excluding Brazil)

Brazil

350 MAG 377 MAG SeaCore 350 MAG SeaCore 377 MAG

Europe, Middle East, Africa

Australia, New Zealand

Japan

South Pacific

Other Asia

Warranty for Government Applications

Engine Model

350 MAG 377 MAG SeaCore 350 MAG SeaCore 377 MAG

The Americas (excluding Brazil)

Brazil

Europe, Middle East, Africa

Australia, New Zealand

Japan

South Pacific

Other Asia

Region

Section 1 - Warranty

Standard Factory Limited Warranty by

Certification Status of Boat Manufacturer

Not Certified

1 year 1 year 1 year

2 years 2 years 2 years

1 year or 500 hours 1 year or 500 hours 1 year or 500 hours

Standard Factory Limited Warranty by

Certification Status of Boat Manufacturer

Not Certified

1 year 1 year 3 years

2 years 2 years 2 years

1 year or 500 hours 1 year or 500 hours 1 year or 500 hours

Installation Quality

Certified

Installation Quality

Certified

Commercial Limited

Corrosion Warranty

Government Limited

Corrosion Warranty

Emission Control Warranty Information

Important Information

To identify the applicable emission control warranty coverage for a particular product, refer to the Emission Control Information label affixed to the engine.

Engines designated as exempt from either Federal EPA or California emission control regulations are not covered by a separate emission control component warranty. The product's Mercury MerCruiser manufacturer's warranty is not affected by the engine's designation under Federal EPA or California emission control regulations.

For a list of typical emission control related engine components, refer to Emission Control System Components in the warranty section of your owners manual.

90-8M0050539 eng MAY 2011 Page 11

Page 20

Section 1 - Warranty

REFER TO THE OWNER'S MANUAL FOR MAINTENANCE SPECIFICATIONS AND ADJUSTMENTS

FAMILY:

XXXXXXXXXXXX

EMISSION CONTROL INFORMATION

NOT FOR SALE IN CALIFORNIA

THIS MARINE ENGINE COMPLIES WITH U.S. EPA EXHAUST REGULATIONS FOR 2009

XXXXXXXX

SERIAL #:

DOM: MMM YYYY

DISP: X.XL

ECIEPA

0575

43518

CO FEL : XXX g/kWh

POWER XXX kW :

HC+NOx FEL : XX.X g/kWh

REFER TO THE OWNER'S MANUAL FOR MAINTENANCE SPECIFICATIONS AND ADJUSTMENTS

FAMILY:

XXXXXXXXXXX

EMISSION CONTROL INFORMATION

THIS ENGINE CONFORMS TO 2009 CALIFORNIA EMISSION REGULATIONS FOR SPARK IGNITION MARINE ENGINES

XXXXXXXX

SERIAL #:

DOM: MMM YYYY

DISP: X.XL

ECICARB

0575

43519

CO FEL : XXX g/kWh

POWER XXX kW :

HC+NOx FEL : XX.X g/kWh

REFER TO THE OWNER'S MANUAL FOR MAINTENANCE SPECIFICATIONS AND ADJUSTMENTS

EMISSION CONTROL INFORMATION

THIS ENGINE CONFORMS TO 2009 CALIFORNIA AND U.S. EPA EMISSION REGULATIONS FOR SPARK IGNITION MARINE ENGINES

XXXXXXXX

SERIAL #:

DOM: MMM YYYY

DISP: X.XL

ECIEPACA

0575

43520

HC+NOx FEL : XX.X g/kWh

POWER XXX kW :

CO FEL : XXX g/kWh

FAMILY:

XXXXXXXXXXXX

REFER TO THE OWNER'S MANUAL FOR MAINTENANCE SPECIFICATIONS AND ADJUSTMENTS

EMISSION CONTROL INFORMATION

THIS ENGINE CONFORMS TO 2009 CALIFORNIA AND U.S. EPA EMISSION REGULATIONS FOR SPARK IGNITION MARINE ENGINES

XXXXXXXX

SERIAL #:

DOM: MMM YYYY

DISP: X.XL

ECIEPACA

0575

HC+NOx FEL : XX.X g/kWh

POWER XXX kW :

CO FEL : XXX g/kWh

FAMILY:

XXXXXXXXXXXX

43500

abcde

Emission Control Information Label

A tamper‑resistant emission control information (ECI) label is affixed to the engine in a visible location at the time of manufacture by Mercury MerCruiser. Please note that the low emissions certification will not affect the fit, function, or performance of the engine. Boatbuilders and dealers may not remove the label or the part it is affixed to before sale. If modifications are necessary, contact Mercury MerCruiser about the availability of replacement decals before proceeding. In addition to the required emissions statement, the label lists the engine serial number, family, applicable emission standard, date of manufacture (month, year), and engine displacement.

a - Applicable standard b - Engine serial number c - Engine family name d - Hydrocarbons plus oxides of nitrogen family emission

limit

e - Date of manufacture f - Engine displacement, engine power g - Carbon monoxide family emission limit

IMPORTANT: A CE mark in the lower right corner of the Emission Control Information label indicates that an EU Declaration of Conformance applies. Refer to the front page of this manual for further information. IMPORTANT: Engines designated as exempt from either Federal EPA or California emission control regulations are not covered by a separate emission control component warranty. The product's Mercury MerCruiser manufacturer's warranty is not affected by the engine's designation under Federal EPA or California emission control regulations.

ECI Label Standard of Compliance

Indicates a marine engine compliant with United States EPA exhaust emission regulations for 2009. This marine engine is not for sale in California.

Indicates a marine engine compliant with California CARB exhaust emission regulations for 2009

Indicates a marine engine compliant with California CARB and U.S. EPA regulations for 2009

Page 12 90-8M0050539 eng MAY 2011

Page 21

ECI Label Standard of Compliance

REFER TO THE OWNER'S MANUAL FOR MAINTENANCE SPECIFICATIONS AND ADJUSTMENTS

EMISSION CONTROL INFORMATION

NOT FOR SALE IN CALIFORNIA

THIS ENGINE IS EXEMPT UNDER 40 CFR 1068.255 FROM EMISSION STANDARDS AND RELATED REQUIREMENTS

XXXXXXXX

SERIAL #:

DOM: MMM YYYY

DISP: X.XL

ECIEXEMP

0575

43521

POWER XXX kW :

CO FEL : XXX g/kWh

FAMILY:

XXXXXXXXXXXX

HC+NOx FEL : XX.X g/kWh

EMISSION CONTROL INFORMATION

XXXXXXXX

SERIAL #:

DOM: MMM YYYY

DISP: X.XL

ECICARBX

0575

43522

THIS ENGINE CONFORMS TO 2010 CALIFORNIA EMISSION REGULATIONS FOR SPARK IGNITION MARINE ENGINES. THIS ENGINE IS EXEMPT UNDER 40 CFR 1068.255 FROM EMISSION STANDARDS AND RELATED REQUIREMENTS. REFER TO THE OWNERS MANUAL FOR MAINTENANCE SPECIFICATIONS AND ADJUSTMENTS.

POWER XXX kW :

CO FEL : XXX g/kWh

HC+NOx FEL : XX.X g/kWh

FAMILY:

XXXXXXXXXXXX

EMISSION CONTROL INFORMATION

ECISERV

THIS ENGINE DOES NOT COMPLY WITH U.S. EPA NONROAD EMISSION REQUIREMENTS. SELLING OR INSTALLING THIS ENGINE FOR ANY PURPOSE OTHER THAN TO REPLACE A NONROAD ENGINE BUILT BEFORE JANUARY 1, 2010 MAY BE A VIOLATION OF FEDERAL LAW SUBJECT TO CIVIL PENALTY.

XXXXXXXX

SERIAL #:

FAMILY:

XXXXXXXXXXXX

HC+NOx FEL : XX.X g/kWh

DISP: X.XL

POWER XXX kW :

CO FEL : XXX g/kWh

0575

43499

DOM: MMM YYYY

Indicates a marine engine exempt under 40 CFR 1068.255 from United States EPA exhaust emission regulations for 2010. This marine engine is not for sale in California.

Indicates a marine engine compliant with 2010 California emission regulations and exempt under 40 CFR 1068.255 from United States EPA exhaust emission regulations

Section 1 - Warranty

Indicates a service marine engine that can replace a marine engine built prior to January 1, 2010.

Owner Responsibility

The operator must have routine engine maintenance performed to maintain emission levels within prescribed certification standards.

The operator may not modify the engine in any manner that alters the horsepower or allows emissions levels to exceed factory specifications.

California Emissions Limited Warranty—350/377 MAG ECT and SeaCore 350/377 MAG ECT

NOTE: Mercury Marine does not establish model years for the Mercury MerCruiser product line. In order to comply with CARB warranty regulations, and for that limited purpose only, model year shall have the same meaning as calendar year. As an example, 2003 model year products refers to products manufactured during calendar year 2003.

The California Air Resources Board has promulgated air emissions regulations for inboard and sterndrive engines. The regulations apply to all inboard and sterndrive engines that were manufactured for the 2003 model year and later. Mercury Marine, in compliance with those regulations, provides this limited warranty for the emission control systems (see the components of the emission control system listed following), and further warrants that the inboard or sterndrive engine was designed, built, and equipped to conform with all applicable regulations adopted by the California Air Resources Board pursuant to its authority in Chapters 1 and 2, Part 5, Division 26 of the Health and Safety Code. For information regarding the limited warranty for the non‑emissions related components of the inboard or sterndrive engine, please see the limited warranty statement for your engine.

What Is Covered

NOTE: Your dealer will register your engine for warranty coverage for you. The warranty registration process is not related in any way to the process of obtaining a license, title or registration from state boating authorities. You should ask your dealer to update your warranty registration information to reflect a change of address or a transfer of ownership. (This change may be made at any time.) Refer to the Warranty Registration information in your owners manual or to your dealer for more information.

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Section 1 - Warranty

Mercury Marine warrants the components of the emissions control systems (see the components of the emission control system listed following) of its new, 2003 model year and later California‑certified inboard and sterndrive engines, registered to a California resident, to be free from defects in material or workmanship that cause the failure of a warranted part to be identical in all material respects to that part as described in the application of Mercury Marine for certification from the California Air Resources Board, for the period of time, and under the conditions identified below. The cost to diagnose a warranty failure is covered if the warranty claim is approved. Damage to other engine components caused by the failure of a warranted part will also be repaired under warranty.

Duration of Coverage

This limited warranty provides coverage for the components of the emissions control systems. Specific emission control related parts on new inboard or sterndrive engines are warranted for 3 years or 480 hours, whichever first occurs, from either the date the product is first sold, or first put into service, whichever occurs first. Emission related normal maintenance items such as spark plugs and filters, that are on the warranted parts list are warranted up to their first required replacement interval only. Refer to Emission Control System Components and Maintenance Schedule. The repair or replacement of parts, or the performance of service under this warranty, does not extend the life of this warranty beyond its original expiration date. Unexpired warranty coverage can be transferred to a subsequent purchaser. Refer to Transfer of Warranty.

How to Obtain Warranty Coverage

The customer must provide Mercury with a reasonable opportunity to repair and reasonable access to the product for warranty service. Warranty claims shall be made by delivering the product for inspection to a Mercury dealer authorized to service the product. If purchaser cannot deliver the product to such a dealer, please notify Mercury Marine and Mercury will then arrange for the inspection and any covered repair. Purchaser in that case shall pay for all related transportation charges and/or travel time. If the service provided is not covered by this warranty, purchaser shall pay for all related labor and material, and any other expenses associated with that service. Purchaser shall not, unless requested by Mercury, ship the product or parts of the product directly to Mercury.

What Mercury Will Do

Mercury Marine's sole and exclusive obligation under this warranty is limited to, at our expense and at our option, repairing or replacing defective parts with new or Mercury Marine certified re‑manufactured parts, or refunding the purchase price of the Mercury product. Mercury reserves the right to improve or modify products from time to time without assuming an obligation to modify products previously manufactured.

What Is Not Covered

This limited warranty does not cover routine maintenance items, tune ups, adjustments, normal wear and tear, damage caused by abuse, abnormal use, use of a propeller or gear ratio that does not allow the engine to run in its recommended wide‑open‑throttle RPM range (see Specifications), operation of the product in a manner inconsistent with the recommended operation procedures, neglect, accident, submersion, improper installation (proper installation specifications and techniques are set forth in the installation instructions for the product), improper service, jet pump impellers and liners, operation with fuels, oils or lubricants which are not suitable for use with the product (see Specifications), alteration or removal of parts.

Expenses related to haul‑out, launch, towing, storage, telephone, rental, inconvenience, slip fees, insurance coverage, loan payments, loss of time, loss of income, or any other type of incidental or consequential damages are not covered by this warranty. Also, expenses associated with the removal and/or replacement of boat partitions or material caused by boat design for access to the product are not covered by this warranty.

Non‑warranty maintenance, replacement, or repair of emission control devices and systems may be performed by any marine engine repair establishment or individual. The use of non‑Mercury parts for non‑warranty maintenance or repairs will not be grounds for disallowing other warranty work. The use of add‑on (as defined at section 1900 (b)(1) and (b)(10) of Title 13 of the California Code of Regulations) or modified parts not exempted by the California Air Resources Board may be grounds for disallowing a warranty claim, at the discretion of Mercury Marine. Failures of warranted parts caused by the use of a non‑exempted add‑on or modified part will not be covered.

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Section 1 - Warranty

Disclaimers and Limitations

If you have any questions regarding your warranty rights and responsibilities, refer to Owner Service Assistance for contact information.

California Emission Control Warranty Statement—350/377 MAG ECT and SeCore 350/377 MAG ECT

Your Warranty Rights and Obligations

The California Air Resources Board is pleased to explain the emission control system warranty on your 2003 model year and later inboard or sterndrive engine. In California, new inboard and sterndrive engines must be designed, built and equipped to meet the State's stringent anti‑smog standards. Mercury Marine must warrant the emission control system on your inboard or sterndrive engine for the periods of time listed below provided there has been no abuse, neglect or improper maintenance of your inboard or sterndrive engine.

Your emission control system may include parts such as the carburetor or fuel injection system, the ignition system, and catalytic converter. Also included may be hoses, belts, connectors and other emission‑related assemblies.

Where a warrantable condition exists, Mercury Marine will repair your inboard or sterndrive engine at no cost to you; including diagnosis, parts and labor.

Manufacturer's Warranty Coverage

Select emission control parts from 2009 and later (inboard or sterndrive) engines are warranted for 3 years or 480 hours, whichever first occurs. However, warranty coverage based on the hourly period is only permitted for engines that are equipped with hour meters as defined in s 2441(a)(13) or their equivalent. If any emission‑related part on your engine is defective under warranty, the part will be repaired or replaced by Mercury Marine.

Owner's Warranty Responsibilities

As the inboard or sterndrive engine owner, you are responsible for the performance of the required maintenance listed in your owner's manual. Mercury Marine recommends that you retain all receipts covering maintenance on your inboard or sterndrive engine, but Mercury Marine cannot deny warranty solely for the lack of receipts or your failure to ensure the performance of all scheduled maintenance.

As the inboard or sterndrive engine owner, you should however be aware that Mercury Marine may deny you warranty coverage if your inboard or sterndrive engine or a part has failed due to abuse, neglect, improper maintenance or unapproved modifications.

You are responsible for presenting your inboard or sterndrive engine to a Mercury Marine dealer authorized to service the product as soon as a problem exists. The warranty repairs will be completed in a reasonable amount of time, not to exceed 30 days.

If you have any questions regarding your warranty rights and responsibilities, refer to Owner Service Assistance for contact information.

U.S. EPA Emissions Limited Warranty

Consistent with the obligations created by 40 CFR Part 1045, Subpart B, Mercury Marine provides an emission warranty of three years or 480 hours of engine use whichever occurs first to the retail purchaser, that the engine is designed, built, and equipped so as to conform at the time of sale with applicable regulations under section 213 of the Clean Air Act, and that the engine is free from defects in materials and workmanship which cause the engine to fail to conform with applicable regulations.

Emission Control System Components

The emission‑related warranty covers all components whose failure would increase an engine's emission of any regulated component including the following list of components:

1. Fuel metering system

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Section 1 - Warranty

a. Carburetor and internal parts (or fuel pressure regulator or fuel injection system) b. Air/fuel ratio feedback and control system c. Cold start enrichment system d. Intake valves

2. Air induction system a. Controlled hot air intake system b. Intake manifold c. Air filter d. Turbo charger systems e. Heat riser valve and assembly

3. Ignition system a. Spark plugs b. Magneto or electronic ignition system c. Spark control system d. Ignition coil or control module e. Ignition wires

4. Lubrication system a. Oil pump and internal parts b. Oil injectors c. Oil meter

5. Positive crankcase ventilation (PCV) system a. PCV valve b. Oil filler cap

6. Exhaust system a. Exhaust manifold b. Exhaust elbow c. Intermediate exhaust elbow d. Lower exhaust pipe e. Tailpipe

7. Catalysts or thermal reactor system a. Catalytic converter b. Thermal reactor c. Exhaust manifold d. Exhaust valves

8. Miscellaneous items used in above systems a. Hoses, clamps, fittings, tubing, sealing gaskets or devices, and mounting hardware b. Pulleys, belts, and idlers c. Vacuum, temperature, check and time sensitive valves and switches d. Electronic controls

NOTE: The EPA emission‑related warranty does not cover components whose failure would not increase an engine's emissions on any regulated pollutant.

Emission Certification Star Label

Your boat is labeled on the hull with one of the following star labels. The Symbol for Cleaner Marine Engines Means:

1. Cleaner Air and Water ‑ for a healthier lifestyle and environment.

2. Better Fuel Economy ‑ burns up to 30‑40 percent less gas and oil than conventional carbureted two‑stroke engines, saving

money and resources.

3. Longer Emission Warranty ‑ Protects consumer for worry free operation.

Beginning January 1, 2003, one Three‑Star or Four‑Star label will be included with each factory‑certified Mercury MerCruiser engine.

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Section 1 - Warranty

XX 1234 XX

32770

All Mercury MerCruiser engines (500 hp and below) will have a Three‑Star Ultra Low Emission rating or Four‑Star Super Ultra Low Emission rating. The Star label identifies that these engines meet the California Air Resources Board's Sterndrive and Inboard marine engine 2007 and later exhaust emission standards. Engines meeting these standards have 65‑90% lower emissions than One‑Star – Low Emissions engines.

The Star label will be affixed on the left side of the hull as shown.

a - Recommended location b - Secondary location

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Section 1 - Warranty

42145

42146

42155

One Star - Low emission

Two Stars - Very Low emission

Three Stars - Ultra Low emission

mc79569-1

The one‑star label identifies personal watercraft, outboard, sterndrive and inboard engines that meet the Air Resources Board's Personal Watercraft and Outboard marine engine 2001 exhaust emission standards. Engines meeting these standards have 75% lower emissions than conventional carbureted two‑stroke engines. These engines are equivalent to the U.S. EPA's 2006 standards for marine engines.

The two‑star label identifies personal watercraft, outboard, sterndrive and inboard engines that meet the Air Resources Board's Personal Watercraft and Outboard marine engine 2004 exhaust emission standards. Engines meeting these standards have 20% lower emissions than One Star ‑ Low‑Emission engines.

The three‑star label identifies engines that meet the Air Resources Board's Personal Watercraft and Outboard marine engine 2008 exhaust emission standards or the Sterndrive and Inboard marine engine 2003 exhaust emission standards. Engines meeting these standards have 65% lower emissions than One Star ‑ Low Emission engines.

Four Stars - Super Ultra Low emission

The Four Star label identifies engines that meet the Air Resources Board's Sterndrive and Inboard marine engine 2009 exhaust emission standards. Personal Watercraft and Outboard marine engines may also comply with these standards. Engines meeting these standards have 90% lower emissions than One Star ‑ Low Emission engines.

Hang Tag

The dealer must mark the appropriate box on one hang tag to match the Star label affixed to the boat. The dealer is responsible for displaying the hang tag in a visible location on the boat on display in California. Failure to properly display the hang tag could result in a citation and possible fine to the dealer from the California Air Resources Board.

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Section 1 - Warranty

43291

If in California, the dealer must place the hang tag in a visible location in the boat prior to displaying the boat.

Hang tag front side Hang tag back side

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Section 1 - Warranty

Notes:

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Section 2 - Getting to Know Your Power Package

Table of Contents

Section 2 - Getting to Know Your Power Package

Additional Operation Instructions for Axius Systems ........... 22

Identification......................................................................... 22

Engine Serial Number Decal MPI..................................22

Alpha Sterndrive Decal Identification.............................22

Alpha Transom Serial Number......................................23

Bravo Sterndrive Serial Number and Identification........23

Bravo Transom Serial Number......................................24

Lanyard Stop Switch............................................................. 24

Instrumentation—350/377 MAG and SeaCore 350/377 MAG

.............................................................................................. 25

Digital Gauges .............................................................. 25

Analog Gauges ............................................................. 26

Instrumentation—350/377 MAG ECT and SeaCore 350/377

MAG ECT............................................................................. 26

VesselView....................................................................26

Digital Gauges...............................................................27

Analog Gauges..............................................................28

Remote Controls (Non‑DTS Models).................................... 28

Remote Controls............................................................28

Panel Mount Features ........................................... 29

Console Mount Features ....................................... 29

Remote Controls (DTS Models)........................................... 30

Remote Controls............................................................30

Panel Mount Features...................................................30

Console Mount Features ‑ Single Engine......................31

Slim Binnacle Console Mount Features ‑ Single Engine

.......................................................................................31

Console Mount Features‑ Dual Engine..........................32

Synchronizing Dual Engines..........................................32

Dual Helm Station Transfer...........................................33

Synchronizing Dual Helms Prior To Station Transfer

.............................................................................. 33

Zero Effort Features.......................................................34

Dual Console Control with CAN Trackpad Features and

Operation.............................................................................. 34

Dual‑Handle Console Control With CAN Trackpad:

Features and Operation.................................................34

Synchronizing Engines..................................................35

Helm Transfer................................................................36

Synchronizing Helms Prior to Transfer .................. 36

Zero Effort Features.......................................................37

Power Trim........................................................................... 37

Single Engine Trim/Trailer ............................................ 38

Dual Engine Trim/Trailer ............................................... 38

Electrical System Overload Protection—350/377 MAG ECT

and SeaCore 350/377 MAG ECT......................................... 38

Electrical System Overload Protection—350/377 MAG and

SeaCore 350/377 MAG........................................................ 42

Visual and Audio Warning Systems—350/377 MAG ECT and

SeaCore 350/377 MAG ECT................................................ 44

Service Engine Light and OBD‑M MIL Kit......................44

Testing the OBD‑M Malfunction Indicator Lamp (MIL)

.............................................................................. 44

Audio Warning System..................................................44

Caution .................................................................. 45

Severe ................................................................... 45

Testing the Audio Warning System ....................... 45

Guardian Strategy..........................................................45

Audio Warning System—350/377 MAG and SeaCore350/377

MAG..................................................................................... 46

Audio Warning System..................................................46

Caution .................................................................. 46

Severe ................................................................... 46

Testing the Audio Warning System ....................... 46

Engine Guardian Strategy.............................................46

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Section 2 - Getting to Know Your Power Package

25903

25681

Additional Operation Instructions for Axius Systems

If your boat has DTS engines equipped with an Axius system, refer also to the Axius Operation Manual included with the boat.

Identification

The serial numbers are the manufacture's keys to numerous engineering details which apply to your MerCruiser power package. When contacting MerCruiser about service, always specify model and serial numbers.

Engine Serial Number Decal MPI

The serial number decal is located on the engine cover.

Serial numbers and maintenance color codes decal

The engine serial number is also stamped in the engine block.

Alpha Sterndrive Decal Identification

The Drive Serial No. is located on the port side of the alpha sterndrive. The Drive Ratio is located on the starboard side of the alpha sterndrive.

Alpha sterndrive

a - Drive gear ratio decal (starboard) b - Serial number decal (port)

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Section 2 - Getting to Know Your Power Package

25619

33533

33534

Alpha Transom Serial Number

The transom serial number is located on the top of the transom assembly.

Alpha transom assembly serial number

Bravo Sterndrive Serial Number and Identification

The Bravo sterndrive serial number, gear ratio, model number, and bar code are embedded in the ground plate on the port side of the sterndrive.

Bravo sterndrive information on ground plate

The serial number is also stamped as a permanent reference on the sterndrive casting inside the back cover.

Bravo sterndrive serial number stamping

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Section 2 - Getting to Know Your Power Package

25904

25905

Bravo Transom Serial Number

The Bravo transom serial number is stamped in the U‑bolt plate of the Bravo transom assembly.

Bravo transom assembly U-bolt plate

a - Transom assembly serial Number

The serial number is also stamped on the gimbal housing. This is used as a permanent reference for authorized MerCruiser Dealers.

Gimbal housing with serial number stamping

a - Transom assembly serial

Number

Lanyard Stop Switch

The purpose of a lanyard stop switch is to turn off the engine when the operator moves outside the operator's position (as in accidental ejection from the operator's position).

RUN

74608

Accidental ejections, such as falling overboard, are more likely to occur in:

• low‑sided sport boats

• bass boats

• high performance boats

Accidental ejections can also occur from:

• poor operating practices

Page 24 90-8M0050539 eng MAY 2011

a - Stop switch b - Lanyard c - Clips to the operator

Page 33

Section 2 - Getting to Know Your Power Package

• sitting on the seat or gunwale at planing speeds

• standing at planing speeds

• operating at planing speeds in shallow or obstacle infested waters

• releasing your grip on the steering wheel that is pulling in one direction

• consuming alcohol or drugs

• high speed boating maneuvers

The lanyard is a cord usually between 122 and 152 cm (4 and 5 ft) in length when stretched out, with an element on one end made to be inserted into the switch and a snap on the other end for attaching to the operator. The lanyard is coiled to make its at‑rest condition as short as possible to minimize the likelihood of lanyard entanglement with nearby objects. Its stretched‑out length is made to minimize the likelihood of accidental activation should the operator choose to move around in an area close to the normal operator's position. If it is desired to have a shorter lanyard, wrap the lanyard around the operator's wrist or leg, or tie a knot in the lanyard.

Activation of the lanyard stop switch will stop the engine immediately, but the boat will continue to coast for some distance depending upon the velocity and degree of any turn at shut down. However, the boat will not complete a full circle. While the boat is coasting, it can cause injury to anyone in the boat's path as seriously as the boat would when under power.

We strongly recommend that other occupants be instructed on proper starting and operating procedures should they be required to operate the engine in an emergency (e.g. if the operator is accidentally ejected).

WARNING

If the operator falls out of the boat, stop the engine immediately to reduce the possibility of serious injury or death from being struck by the boat. Always properly connect the operator to the stop switch using a lanyard.

Accidental or unintended activation of the switch during normal operation is also a possibility. This could cause any, or all, of the following potentially hazardous situations:

• Occupants could be thrown forward due to unexpected loss of forward motion, a particular concern for passengers in the front of the boat who could be ejected over the bow and possibly struck by the propulsion or steering components.

• Loss of power and directional control in heavy seas, strong current or high winds.

• Loss of control when docking.

WARNING

Avoid serious injury or death from deceleration forces resulting from accidental or unintended stop switch activation. The boat operator should never leave the operator's station without first disconnecting the stop switch lanyard from the operator.

Instrumentation—350/377 MAG and SeaCore 350/377 MAG

Digital Gauges

A Mercury SmartCraft System instrument package can be purchased for this product. A few of the functions the instrument package will display are engine RPM, coolant temperature, oil pressure, battery voltage, fuel consumption and engine operating hours.

The SmartCraft Instrument package will also aid in Engine Guardian diagnostics. The SmartCraft Instrument package will display critical engine alarm data and potential problems.

Refer to the manual with your gauge package for the warning functions monitored and basic operation of the SmartCraft Instrument package.

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Section 2 - Getting to Know Your Power Package

OIL

C H

TEMP

R P M

X 1000

MPH

KPH

100

120

110

10 16

BATT

FUEL

CRUISELOG

0 0 0 0

TRIM

14671

Analog Gauges

The following is a brief explanation of the instrumentation typically found on some boats. As the owner or operator, you should be familiar with all instruments and their functions. Because of the large variety of instrumentation and manufacturers, you should have your boat dealer explain the particular gauges and normal readings for your boat.

a - Speedometer b - Tachometer c - Oil pressure gauge d - Voltmeter e - Water temperature

gauge

f - Fuel gauge g - Hour meter h - Bilge blower switch i - Ignition switch j - Power trim gauge

Speedometer: indicates boat speed

Tachometer: indicates engine RPM

Oil pressure gauge: indicates engine oil pressure

Voltmeter: indicates battery voltage

Water temperature gauge: indicates engine operating temperature

Fuel gauge: indicates quantity of fuel in the tank

Hour meter: records engine operating time

Bilge blower switch: operates the bilge blower

Ignition switch: starts and stops the engine.

Power trim gauge: indicates sterndrive unit angle (trim out or in)

Instrumentation—350/377 MAG ECT and SeaCore 350/377 MAG ECT

VesselView

Your power package may come equipped with the following system viewer.

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Section 2 - Getting to Know Your Power Package

24797

26238

Your power package may be connected to a SmartCraft VesselView display. This display provides a single, easy‑to‑use source for real‑time information about a variety of vessel systems. The interactive VesselView display continuously monitors and reports information about speed and performance, trim angle, water temperature and depth, and other operating data. When VesselView detects a problem with any connected system, it displays an alarm message to signal the problem to the boat operator.

Typical VesselView application

VesselView may also be connected to other vessel systems, such as GPS, generators, and cabin environmental controls. This comprehensive vessel integration allows the operator to monitor and control a wide range of vessel systems from a single, convenient display.

Digital Gauges

A Mercury SmartCraft System instrument package can be purchased for this product. A few of the functions the instrument package will display are engine RPM, coolant temperature, oil pressure (requires a SmartCraft oil pressure sender kit), battery voltage, fuel consumption, and engine operating hours.

SmartCraft digital gauges also feature troll control. This allows a vessel to maintain a constant speed with an engine speed between 500 and 1200 RPM.

SmartCraft gauges

a - Tachometer b - Speedometer c - LCD system view display

The SmartCraft instrument package also aids in Engine Guardian diagnostics. The SmartCraft Instrument package displays critical engine alarm data and potential problems.

Refer to the manual with your gauge package for the warning functions monitored by and basic operation of the SmartCraft instrument package.

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Section 2 - Getting to Know Your Power Package

OIL

C H

TEMP

R P M

X 1000

MPH

KPH

100

120

110

10 16

BATT

FUEL

CRUISELOG

0 0 0 0

TRIM

14671

Analog Gauges

The following is a brief explanation of the instrumentation typically found on some boats. The owner and operator should be familiar with all instruments and their functions. Because of the large variety of instrumentation and manufacturers, you should have your boat dealer explain the particular gauges and normal readings for your boat.

Reference Gauge Function

a Speedometer Indicates boat speed.

b Tachometer Indicates engine RPM.

c Oil pressure gauge Indicates engine oil pressure.

d Voltmeter Indicates battery voltage.

e Coolant temperature gauge Indicates engine operating temperature.

f Fuel gauge Indicates quantity of fuel in tank.

g Hour meter Records engine operating time.

h Bilge blower switch Operates the bilge blower.

i Ignition switch Allows the operator to start and stop engine.

j Power trim gauge Indicates sterndrive angle (trim up [out] and down [in]).

Remote Controls (Non‑DTS Models)

Remote Controls

Your boat may be equipped with a Mercury Precision Parts or Quicksilver remote controls. All controls may not have all features shown. Consult your dealer for a description and/or demonstration of your remote control.

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Panel Mount Features

Section 2 - Getting to Know Your Power Package

a - Neutral lock button b - Throttle only button c - Lanyard stop switch d - Control handle tension adjustment screw e - Control handle f - Trim/tilt button

mc77019-1

Neutral Lock Button - Prevents accidental shift and throttle engagement. Neutral lock button must be pushed into move the

control handle out of neutral. Throttle Only Button - Allows engine throttle advancement without shifting the engine. This is done by disengaging the shift

mechanism from the control handle. The throttle only button can be depressed only when the remote control handle is in the neutral position, and should only be used to assist in starting the engine.

Lanyard Stop Switch - Turns the ignition off whenever the operator (when attached to the lanyard) moves far enough away from the operator's position to activate the switch. Refer to Lanyard Stop Switch for information on the use of this switch.

Control Handle - Operation of the shift and throttle are controlled by the movement of the control handle. Push the control handle forward from neutral with a quick firm motion to the first detent for forward gear. Continue pushing forward to increase speed. Pull the control handle back from neutral with a quick firm motion to the first detent for reverse gear and continue pushing back to increase speed.

Control Handle Tension Adjustment Screw - (not visible) This screw is used to adjust the effort required to move the remote control handle. Refer to instructions provided with remote control for complete adjustment instructions.

Trim/Tilt Button - Refer to Power Trim.

Console Mount Features

Throttle Only Button - Allows engine throttle advancement without shifting the engine. This is done by disengaging the shift

mechanism from the control handle. The throttle only button can be depressed only when the remote control handle is in the neutral position.

mc79503-1

a - Throttle Only Button b - Control Handle c - Power Trim Switch d - Trailer Switch

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Section 2 - Getting to Know Your Power Package

Control Handles - Operation of the the shift and throttle are controlled by the movement of the control handle. Push the control handle forward from neutral with a quick firm motion to the first detent for forward gear and continue pushing forward to increase speed. Pull the control handle back from neutral with a quick firm motion to the first detent for reverse gear and continue pushing back to increase speed.

Power Trim Switch - See Power Trim section for detailed power trim operating procedures.

Trailer Switch - Used to raise drive unit for trailering, launching, beaching or shallow water operation. See Power Trim for detailed

trailer switch operation.

Remote Controls (DTS Models)

Remote Controls

IMPORTANT: Your boat must be equipped with a Mercury Marine electronic remote control. Start in gear protection is provided by this control system and prevents the engine from starting when the control is actuated in forward or reverse. Refer to the Mercury Precision Parts/Quicksilver Accessories Guide.

The Digital Throttle and Shift System (DTS) required to operate this engine package provides start and stop functions, throttle control, shift control, start in gear protection, and emergency lanyard stop functions. The DTS system works with specialized helm components such as a command module kit and electronic remote control. Consult your dealer for a description and/or demonstration of your remote control.

Panel Mount Features

Control Handle - Operation of the shift and throttle are controlled by the movement of the control handle. Push the control handle

forward from neutral with a quick, firm motion to the first detent for forward gear. Continue pushing forward to increase speed. Pull the control handle back from neutral with a quick, firm motion to the first detent for reverse gear and continue pushing back to increase speed.

Shift Lock - Pressing the shift lock allows the engine to shift. The shift lock must always be pressed when moving the control handle out of the neutral position.

Trim/Tilt Switch (if equipped) - Refer to Power Trim.

Throttle Only Button - Allows engine throttle advancement without shifting the engine. The throttle only button can be depressed

only when the remote control is in the neutral position, and should only be used to assist in starting or warming up the engine.

Start/Stop Button - Allows the boat operator to start or stop the engine without using the ignition key.

Detent Tension Adjustment Screw - This screw can be adjusted to increase or decrease the effort required to move the control

handle out of the detent positions (cover must be removed). Turning the screw clockwise will increase tension. Control Handle Friction Adjustment Screw - This screw can be adjusted to increase or decrease the tension on the control

handle (cover must be removed). This will help prevent unwanted motion of the handle in rough water. Turn the screw clockwise to increase tension and counterclockwise to decrease tension.

3409

a - Lanyard stop switch b - Control handle c - Shift lock d - Trim/tilt switch e - Throttle only button

f - Start/stop button g - Detent tension adjustment screw h - Control handle friction adjustment screw

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Console Mount Features ‑ Single Engine

START

STOP

14637

Section 2 - Getting to Know Your Power Package

Control Handle - Operation of the shift and throttle are controlled by the movement of the control handle. Push the control handle

Trim/Tilt Switch (if equipped) - Refer to Power Trim.

Active Light - The active light is illuminated to show the remote control is active and ready for use.

Neutral Light - The neutral light is illuminated when the engine is in neutral gear position.

3410

a - Control handle b - Trim/tilt switch c - Active light d - Neutral light e - Select key f - Arrow trackpad g - Throttle only/station select key h - Detent tension adjustment i - Control handle friction

adjustment screw

NOTE: Gear position is determined by sensing the position of the shift actuator on the engine, not the position of the gear switch.

Select Key - Selects System View on‑screen options and confirms data entries.

Arrow Trackpad - Navigates through System View on‑screen function messages.

Throttle Only/Station Select Key - Allows engine throttle advancement without shifting the engine. The throttle only/station select

button also allows the boat operator to select which remote control is in control of the engine operation when operating with multiple helms. Refer to Dual Helm Station Transfer.

Detent Tension Adjustment Screw - This screw can be adjusted to increase or decrease the effort required to move the control handle out of the detent positions (cover must be removed). Turning the screw clockwise will increase tension.

Control Handle Friction Adjustment Screw - This screw can be adjusted to increase or decrease the tension on the control handle (cover must be removed). This will help prevent unwanted motion of the handle in rough water. Turn the screw clockwise to increase tension and counterclockwise to decrease tension.

Slim Binnacle Console Mount Features ‑ Single Engine

a - Control handle b - Trim/tilt switch c - Active light d - Neutral light e - Start/stop button f - Throttle only/station select key g - Detent tension adjustment h - Control handle friction adjustment

screw

Control Handle - Operation of the shift and throttle are controlled by the movement of the control handle. Push the control handle forward from neutral with a quick, firm motion to the first detent for forward gear. Continue pushing forward to increase speed. Pull the control handle back from neutral with a quick, firm motion to the first detent for reverse gear and continue pushing back to increase speed.

Trim/Tilt Switch (if equipped) - Refer to Power Trim.

Active Light - The active light is illuminated to show the remote control is active and ready for use.

Neutral Light - The neutral light is illuminated when the engine is in neutral gear position.

NOTE: Gear position is determined by sensing the position of the shift actuator on the engine, not the position of the gear switch.

Stop/Start Button - Allows the boat operator to start or stop the engine without using the ignition key.

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Throttle Only/Station Select Key - Allows engine throttle advancement without shifting the engine. The throttle only/station select button also allows the boat operator to select which remote control is in control of the engine operation when operating with multiple helms. Refer to Dual Helm Station Transfer.

Console Mount Features‑ Dual Engine

a - Trim/tilt switch b - Control handles

c - Active light d - Neutral light e - Select key f - Arrow trackpad

g - Sync light h - Throttle only/station select key

THROTTLE

ONLY

STATION SELECT

SYNC

ACTIVE

i - Detent tension adjustment j - Control handle friction adjustment

3411

screw

Trim/Tilt Switch (if equipped) - Refer to Power Trim.

Control Handle - Operation of the shift and throttle are controlled by the movement of the control handle. Push the control handle

Active Light - The active light is illuminated to show the remote control is active and ready for use.

Neutral Light - The neutral light is illuminated when the engine is in neutral gear position.

NOTE: Gear position is determined by sensing the position of the shift actuator on the engine, not the position of the gear switch.

Select Key - Selects System View on‑screen options and confirms data entries.

Arrow Trackpad - Navigates through System View on‑screen function messages.

Sync Light - The sync light is illuminated when the RPM of the two engines are being synchronized by the DTS system.

Throttle Only/Station Select Key - Allows engine throttle advancement without shifting the engine. The throttle only/station select

button also allows the boat operator to select which remote control is in control of the engine operation when operating with multiple helms. Refer to Dual Helm Station Transfer.

Synchronizing Dual Engines

The auto synchronizing feature, when engaged, will automatically adjust the port engine speed to match the speed of the starboard engine.

Synchronizing of engines will automatically engage when the speed of both engines are over 900 RPM for two seconds and remote control handles are positioned within 5° of each other.

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Auto Synchronizing will stay engaged up to 95% throttle opening. The Sync light will turn on when the engines are synchronized.

THROTTLE

ONLY

STATION SELECT

SYNC

3434

ACTIVE

To disengage, move one or both control handles until they are more than 5° apart, reduce engine speed below 900 RPM, or increase engine speed beyond 95%.

Dual Helm Station Transfer

The throttle only/station select button allows the boat operator to select which remote control is in control of the engine operation. The active light is illuminated at the remote control station that is in control of the engine.

WARNING

Avoid serious injury or death from loss of boat control. The boat operator should never leave the active station while engine is in gear. Helm transfer should only be attempted while both stations are manned. One‑person helm transfer should only be performed while engine is in neutral.

NOTE: Idle position is preferred when doing a station transfer. If conditions do not allow the remote control to be placed at idle position, a station transfer can be done while in gear.

NOTE: Pressing and releasing station select button at new station allows the engine control to be transferred to the new station. The control will automatically start adjusting engine RPM and gear position to match the control handle setting at the new station. Adjust control handles to the desired throttle and gear position.

1. Place active remote control lever to idle position.

2. Proceed to the inactive helm station and position remote control lever to the idle position.

3. Press throttle only/station select button once. The "ACTIVE" light will illuminate to indicate the remote control station is in control of the engine.

a - Active light b - Throttle only/station select

button

ACTIVE

THROTTLE

ONLY

STATION SELECT

ACTIVE

THROTTLE

ONLY

STATION SELECT

SYNC

3433

4. The active light will switch off at the original remote control station.

Synchronizing Dual Helms Prior To Station Transfer

Pressing the station select button and holding it in allows the boat operator 10 seconds to match up the control handle settings at the new station with the handle settings that are at the old (to be inactive) station. If the handles are not matched, the neutral light will flash. The light blinks faster as the handles are nearing match position. Once the light stays on continuously, the handles are matched and the button can be released. Transfer process is complete and the new station is now in control. If the button is held for over 10 seconds, the station transfer is cancelled.

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Section 2 - Getting to Know Your Power Package

SYNC

THROTTLE ONLY

TROLL

TRANSFER

DOCK

1 LEVER

22132

Zero Effort Features

5656

a - Shift ever b - Throttle lever c - Trim/tilt switch

Shift Lever - Shift functions are controlled by the movement of the shift lever. Shift into reverse by moving the shift lever to its aft position. Shift into neutral by moving the shift lever to its center position. Shift into forward by moving the shift lever to its forward position.

Throttle Lever - Throttle functions are controlled by the movement of the throttle lever. Increase the RPM by moving the throttle lever forward. Achieve Wide Open Throttle (WOT) by placing the throttle lever in its full forward position. Decrease RPM by moving the throttle lever back. Achieve minimum RPM (idle) by placing the throttle lever in its full aft position.

Trim/Tilt Switch - Refer to Power Trim.

Dual Console Control with CAN Trackpad Features and Operation

Dual‑Handle Console Control With CAN Trackpad: Features and Operation

1. Operation of shift and throttle is controlled by the movement of the control handle. Push the control handle forward from neutral to the first detent for forward gear. Continue pushing the handle forward to increase speed. Pull the control handle back from neutral to the first detent for reverse gear. Continue pulling the handle back to increase speed.

2. Trim switch (if equipped) ‑ Pressing the trim switch allows the engine to trim up and down.

3417

3. Neutral lights ‑ The neutral lights illuminate when the engine is in neutral gear position. The lights will flash when the engine

is in throttle only mode.

NOTE: Gear position is determined by the position of the shift actuator on the engine, not the position of the control handle.

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22133

SYNC

1 LEVER

NEUTRAL

TROLL

THROTTLE ONLY

DOCK

TRANSFER

28556

4. Troll button ‑ Pressing the "TROLL" button activates troll control. The troll control feature allows the boat operator to set the

engine speed for slow speed cruising or maneuvering. To activate, move the control handles into forward detent and press the button. Use the ‑ or + buttons to decrease or increase speed, up to a maximum of 1000 RPM. If troll control is set at a desired speed and then shut off, the system remembers the set speed and will return to that speed when reengaged. To turn off the troll control press the "TROLL" button, move the throttle to a different speed, or shift the engine into neutral.

5. Transfer button ‑ Pressing the "TRANSFER" button allows engine operation to be transferred from a different helm. Refer to

Helm Transfer.

6. Dock button ‑ Pressing the "DOCK" button initiates docking mode. Docking mode reduces throttle capacity to approximately

50% of normal throttle. To turn off docking mode, shift the engine into neutral and press the "DOCK" button.

7. Throttle only button ‑ Allows the boat operator to increase engine RPM for warm‑up, without shifting the engine into gear. To

engage throttle only, move the control handle into the neutral position. Press the throttle only button and move the control handle ahead to the forward detent. The horn will sound once and the neutral light will start flashing. The horn will sound twice when throttle only is engaged. Advance throttle to increase engine RPM. To disengage, return control handle to neutral position and press the throttle only button. Engine RPM is limited to prevent engine damage.

8. 1 lever button ‑ Pressing the "1 LEVER" button initiates single lever mode. Single lever mode enables the throttle and shift

functions of both engines to be controlled by the port control handle. To turn off single lever mode, shift the engine into neutral and press the "1 LEVER" button.

9. Sync button ‑ Pressing the "SYNC" button turns off or on the auto synchronization feature. Refer to Synchronizing

Engines.

a - Neutral LEDS b - Troll button c - Transfer button d - Dock button e - Throttle only f - 1 lever button g - Sync button

10. Control handle tension adjustment screw ‑ This screw can be adjusted to increase or decrease the tension on the control

handle (cover must be removed). This will help prevent unwanted motion of the handle in rough water. Turn the screw clockwise to increase tension and counterclockwise to decrease tension. Adjust to tension desired.

11. Detent tension adjustment screw ‑ This screw can be adjusted to increase or decrease the effort to move control handle out

of detent positions (cover must be removed). Turning the screw clockwise will increase tension. Adjust to tension desired.

a - Detent tension adjustment screw b - Control handle tension adjustment screw

Synchronizing Engines

The auto synchronizing feature, when engaged, will automatically adjust all engine speeds to match the speed of the starboard engine.

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Section 2 - Getting to Know Your Power Package

SYNC

1 LEVER

NEUTRAL

TROLL

THROTTLE ONLY

DOCK

TRANSFER

22590

SYNC

1 LEVER

NEUTRAL

TROLL

THROTTLE ONLY

DOCK

TRANSFER

22593

Press the "SYNC" button on the CAN trackpad to turn auto synchronization on or off. When the sync LED is yellow, the "SYNC" button has been pressed, but the conditions are not right for auto synchronization to engage. When the sync LED turns red, engine synchronization has been engaged. The engines will remain synchronized as long as engine speed is over 900 RPM for two seconds, remote control handles are positioned within 10% of each other, and the engines are below 95% throttle opening.

To disengage the auto synchronization feature, press the "SYNC" button.

Helm Transfer

WARNING

NOTE: Neutral position is preferred when doing a station transfer. If conditions do not allow the remote control to be placed in the neutral position, a helm transfer can be done while in gear.

The helm transfer function allows the boat operator to select which helm is in control of engine operation. Pressing the "TRANSFER" button two times allows engine control to be transferred to a new helm. When a helm transfer is initiated, the control will automatically start adjusting engine RPM and gear position to match the control handle setting at the new helm. Adjust the control handles to the desired throttle and gear position.

Once the "TRANSFER" button is pressed, the transfer LED will light up and one beep will sound. Press the "TRANSFER" button again to complete the helm transformation. When helm transformation is complete, another beep will sound and the transfer LED will turn off.

NOTE: There is a 10 second time frame to complete a helm transfer. If the helm transfer is not completed, the action will be cancelled and a double beep will sound. Pressing the "TRANSFER" button again will reinitiate a helm transfer.

Synchronizing Helms Prior to Transfer

Pressing the "TRANSFER" button allows the boat operator 10 seconds to match up the control handle settings at the new helm with the handle settings that are at the old (to be inactive) helm. If the handles are not matched, the neutral lights will flash. The light blinks faster as the handles are nearing match position. Once the light stays on continuously, the handles are matched and the button can be pressed again to complete the transfer. This completes the transfer process, and gives control to the new station. If the helm transfer is not completed within 10 seconds, the action will be cancelled.

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Zero Effort Features

Section 2 - Getting to Know Your Power Package

Shift Lever - Shift functions are controlled by the movement of the shift lever. Shift into reverse by moving the shift lever to its aft

position. Shift into neutral by moving the shift lever to its center position. Shift into forward by moving the shift lever to its forward position.

Trim/Tilt Switch - Refer to Power Trim.

5656

a - Shift ever b - Throttle lever c - Trim/tilt switch

Power Trim

Power trim allows the operator to adjust the sterndrive angle while underway, to provide the ideal boat angle for varying load and water conditions. Also, the trailering feature allows the operator to raise and lower the sterndrive unit for trailering, beaching, launching, low speed (below 1200 RPM engine speed) and shallow water operation.

WARNING

Excessive trim can cause serious injury or death at high speeds. Use caution when trimming the sterndrive, and never trim out beyond the gimbal ring support flanges while the boat is underway or at engine speeds above 1200 RPM.

For best performance trim the sterndrive unit so that the boat bottom is at a 3‑5° angle to the water.

3 - 5

mc79528

Trimming sterndrive unit up/out can:

• Generally increase top speed

• Increase clearance over submerged objects or a shallow bottom

• Cause boat to accelerate and plane off slower

• In excess, cause boat porpoising (bouncing) or propeller ventilation

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Section 2 - Getting to Know Your Power Package

• Cause engine overheating if trimmed up/out to a point where any cooling water intake holes are above the water line

mc78529

Trimming sterndrive unit down/in can:

• Help the boat accelerate and plane off quicker

• Generally improve the ride in choppy water

• In most cases, reduce boat speed

• If in excess, lower the bow of some boats to a point at which they begin to plow with their bow in the water while on plane.

This can result in an unexpected turn in either direction called bow steering or over steering if any turn is attempted or if a significant wave is encountered.

mc79530

Single Engine Trim/Trailer

Single engine applications will have a button that can be pressed to trim the sterndrive unit up or down. To raise the sterndrive unit for trailering, beaching, launching, low speed (below 1200 rpm), and shallow water operation push the

trim button to raise the sterndrive unit to the full up/out position. Some controls also have a trailer button that trims the sterndrive to a position suitable for trailer purposes only.

NOTE: The DTS control system limits the extent to which the sterndrive unit can be trimmed up/out when engine speed is above 3500 RPM.

Dual Engine Trim/Trailer

NOTICE

If using external tie bars, raising or lowering the drives independently of each other can damage the drive and steering systems. If using an external tie bar, raise and lower all drives together as a unit.

Dual engine applications may have a single integral button to operate both sterndrive units simultaneously or may have separate buttons for each sterndrive unit.

Some controls also have a trailer button that trims the sterndrives to a position suitable for trailer purposes only.

Electrical System Overload Protection—350/377 MAG ECT and SeaCore 350/377 MAG ECT

If an electrical overload occurs, a fuse will blow or the circuit breaker will trip open. The cause must be found and corrected before replacing the fuse or resetting the circuit breaker.

NOTE: In an emergency, when you must operate the engine and cannot locate the cause for the high current draw, turn off or disconnect all accessories connected to the engine and instrumentation wiring. Reset the circuit breaker. If the breaker remains open, the electrical overload has not been eliminated. Contact your authorized dealer.

The circuit breaker provides protection for the engine wiring harness and the instrumentation power lead. To test or reset the circuit breaker:

1. Remove the engine cover.

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Section 2 - Getting to Know Your Power Package

33214

2. Push the red test button. A yellow lever appears if the circuit breaker is functioning properly.

3. Reset the breaker by pushing the yellow lever back into the housing.

Yellow lever style circuit breaker

a - Yellow lever b - Red test button

22529

A 90 amp fuse, located on the large post of the starter solenoid, protects the engine wiring harness if an electrical overload occurs.

mc74907-1

Four fuses, located on the port side of the engine, protect various electronic fuel injection (EFI) circuits.

Engine fuses

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Section 2 - Getting to Know Your Power Package

33177

32206

Two 10 amp fuses protect the O2 (oxygen) sensors. These are located at the rear of the engine, near the 14‑pin connector.

A 15 amp accessory fuse protects the accessory circuits. This fuse is located on the rear of the engine.

a - Cover b - 15 amp fuse c - Accessory harness

A 20 amp fuse may be located in the ignition switch "I" terminal lead to protect the electrical system. Check for an open fuse if the engine does not start, and the circuit breaker is not tripped.

mc70525-1

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Section 2 - Getting to Know Your Power Package

33179

The power trim system is protected from overload by both a 110 amp fuse and a 20 amp spade fuse on the power trim pump. The trim pump may also have an in‑line circuit protection device in the power trim positive lead near the battery switch or battery connection.

a - 20 amp spade fuse b - 110 amp fuse

A power harness, connected to the engine starting battery, minimizes voltage drop to the electrical system. This harness is protected by a 5 amp fuse. This connection is located at the rear of the engine, near the 14‑pin connector.

Power harness connection

The Quicksilver Three‑Button Power Trim Control Panel is protected by a 20 amp in‑line fuse.

9208

mc70527-1

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Section 2 - Getting to Know Your Power Package

The Quicksilver MerCathode System has a 20 amp in‑line fuse in the wire which connects to the positive (+) terminal on controller. If the fuse is open, the system will not operate and will not protect against corrosion.

mc79977

Electrical System Overload Protection—350/377 MAG and SeaCore 350/377 MAG

If an electrical overload occurs, a fuse will blow or the circuit breaker will trip open. The cause must be found and corrected before replacing the fuse or resetting the circuit breaker.

NOTE: In an emergency, when the engine must be operated and the cause for the high current draw cannot be located and corrected, turn off or disconnect all accessories connected to the engine and instrumentation wiring. Reset the circuit breaker. If the breaker remains open, the electrical overload has not been eliminated. Further checks must be made on the electrical system. Contact your authorized dealer.

1. A circuit breaker provides protection for the engine wiring harness and the instrumentation power lead. The circuit breaker can be tested by pushing the red button. If the circuit breaker is functioning properly, the yellow lever will appear. Reset the yellow lever after testing, or if tripped, by pushing the yellow lever back into the housing.

Yellow lever style circuit breaker-typical

a - Yellow lever‑shown tripped b - Red test button

22529

2. A 90 amp fuse is located on the large post of the starter solenoid. This fuse is designed to protect the engine wiring harness if an electrical overload occurs.

mc74907-1

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Section 2 - Getting to Know Your Power Package

3. Four fuses are located on the port side of the engine. These fuses protect the main power, fuel pump, ignition, and accessory circuits.

mc77602-1

4. A 20 amp fuse may be located in the ignition switch "I" terminal lead to protect the electrical system. Check for blown fuse if the ignition key is turned to the "START" position and nothing happens (and circuit breaker is not tripped).

mc70525-1

5. The power trim system is protected from overload by a 110 amp fuse and a 20 amp spade fuse on the power trim pump. The trim pump may also have an in‑line circuit protection device in the power trim positive lead near the battery switch or battery connection.

a - 20 amp spade fuse b - 110 amp fuse

6. The Quicksilver Three‑Button Power Trim Control Panel is further protected by a 20 amp in‑line fuse.

9208

mc70527-1

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Section 2 - Getting to Know Your Power Package

47594

7. The Quicksilver MerCathode System has a 20 amp in‑line fuse in the wire which connects to the positive (+) terminal on controller. If the fuse is blown, the system will not operate resulting in a loss of corrosion protection.

mc79977

Visual and Audio Warning Systems—350/377 MAG ECT and SeaCore 350/377 MAG ECT

Service Engine Light and OBD‑M MIL Kit

Boats powered by Emissions Control Technology (ECT) catalyzed engines must be equipped with a SmartCraft‑enabled gauge capable of displaying the service engine icon, or a dash mounted service engine light. Malfunction indicator lamp (MIL) kits containing a dash mounted service engine light and a special harness that connects to the engine harness may be purchased separately.

The service engine icon or MIL will provide a visual indication of a malfunction with the engine's emission control system and will remain illuminated while the OBD‑M fault is active.

SC 1000 gauge and service engine light

Testing the OBD-M Malfunction Indicator Lamp (MIL)

1. Turn the ignition switch to the on position without cranking the engine.

2. The service engine icon and MIL light will remain illuminated for 4 seconds if the visual indication system is functioning correctly.

Audio Warning System

IMPORTANT: The audio warning system alerts the operator that a problem has occurred. It does not protect the engine from damage.

The Mercury MerCruiser power package may be equipped with an audio warning system. Most faults cause the warning horn circuit to activate. How the warning horn activates depends on the severity of the problem.

There are two warning horn states:

• Caution

• Severe

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Section 2 - Getting to Know Your Power Package

ON ON

OFF

33402

40388

ONON

6 6 6

OFF

Caution

If a caution state is detected, the audio warning system will sound for six one‑second intervals.

a - Horn (on or off) b - Time (in seconds)

Below are some examples of a caution state:

• Drive oil is low (sterndrive models only)

• Sensor failure

Severe

IMPORTANT: Operators are advised to contact an authorized Mercury MerCruiser dealer if a severe fault is activated. If a severe state is detected, the audio warning system sounds for six seconds, turns off for six seconds, and sounds for six more

seconds. Then the audio warning system sounds for two half‑second intervals every sixty seconds.

a - Horn (on or off) b - Time (in seconds)

Below are some examples of a severe state:

• Transmission fluid temperature is too hot (inboard models only)

• Engine oil pressure is too low

• Engine temperature is too hot

• Seawater pressure is too low

• Transmission pressure is low (inboard models only)

Testing the Audio Warning System

1. Turn the ignition switch to the on position without cranking the engine.

2. Listen for the audio alarm. The alarm will sound if the system is functioning correctly.

Guardian Strategy

Engine Guardian reduces the potential for engine damage by restricting engine power when the PCM detects a potential problem. Below are some examples of what Engine Guardian monitors:

• Oil pressure

• Engine overspeed

• Exhaust manifold temperature

IMPORTANT: Guardian can reduce power anywhere from 100% to idle, depending on the severity of the problem. If forced to idle, boat speed might not respond to throttle operation.

The PCM stores the fault for diagnostics. For example, if the water inlet becomes partially blocked, Guardian reduces the available power level of the engine to help prevent damage from decreased water flow to the engine. If the debris passes through, and full water flow is restored, Guardian restores engine power to normal. To avoid recurrence of the problem, contact an authorized Mercury MerCruiser dealer.

As another example, Transmission Guardian is a MerCruiser DTS feature that protects transmissions from clutch damage. Transmission Guardian monitors the clutch pack pressure in forward and reverse gears. If the transmission fluid pressure drops below a predetermined level, Transmission Guardian lowers the engine torque and speed to prevent clutch slippage. To avoid possible recurrence of the problem, you should contact an authorized dealer. The ECM stores the fault and with this information the technician will be able to more rapidly diagnose problems.

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Section 2 - Getting to Know Your Power Package

ON ON

OFF

33402

40388

ONON

6 6 6

OFF

Audio Warning System—350/377 MAG and SeaCore350/377 MAG

Audio Warning System

IMPORTANT: The audio warning system alerts the operator that a problem has occurred. It does not protect the engine from damage.

There are two warning horn states:

• Caution

• Severe

Caution

If a caution state is detected, the audio warning system will sound for six one‑second intervals.

a - Horn (on or off) b - Time (in seconds)

Below are some examples of a caution state:

• Drive oil is low (sterndrive models only)

• Sensor failure

Severe

seconds. Then the audio warning system sounds for two half‑second intervals every sixty seconds.

a - Horn (on or off) b - Time (in seconds)

Below are some examples of a severe state:

• Transmission fluid temperature is too hot (inboard models only)

• Engine oil pressure is too low

• Engine temperature is too hot

• Seawater pressure is too low

• Transmission pressure is low (inboard models only)

Testing the Audio Warning System

1. Turn the ignition switch to the on position without cranking the engine.

2. Listen for the audio alarm. The alarm will sound if the system is functioning correctly.

Engine Guardian Strategy

IMPORTANT: Boat speed could be reduced to idle and may not respond to the throttle. Engine Guardian Strategy is designed to help reduce the potential for engine damage by reducing engine power when a potential

problem is sensed by the ECM. Engine Guardian monitors:

• Oil pressure

• Coolant temperature

• Seawater pressure

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• Engine overspeed

• Exhaust Manifold Temperature (8.1 and 496 models only)

Also the Engine Guardian Strategy will reduce engine power to 90 percent of maximum if any sensor on the power package fails. For example, if the water inlet becomes partially blocked, Engine Guardian Strategy will reduce the available power level of the

engine to help prevent damage from decreased water flow to the engine. If the debris passes through and full water flow is restored, engine power levels are restored to normal.

To avoid a possible recurrence of the problem you should contact an authorized dealer. The ECM stores the fault and with this information the technician will be able to more rapidly diagnose problems.

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Section 2 - Getting to Know Your Power Package

Notes:

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Table of Contents

Section 3 - On the Water

Additional Operation Instructions for Axius Systems ........... 50

Safe Boating Suggestions.................................................... 50

Carbon Monoxide Exposure................................................. 51

Be Alert To Carbon Monoxide Poisoning ..................... 51

Stay Clear of Exhaust Areas ........................................ 51

Good Ventilation .......................................................... 51

Poor Ventilation ........................................................... 52

Basic Boat Operation (Non‑DTS Models)............................. 52

Launching and Boat Operation......................................52

Operation Chart ..................................................... 52

Starting and Stopping the Engine..................................53

Starting the Engine ................................................ 53

Stopping the Engine .............................................. 53

Starting the Engine After It Has Been Stopped While In

Gear...............................................................................54

Throttle‑Only Operation.................................................54

Trailering the Boat.........................................................54

Freezing Temperature Operation..................................54

Drain Plug and Bilge Pump............................................54

Basic Boat Operation (DTS Models).................................... 54

Launching and Boat Operation......................................54

Operation Chart ..................................................... 54

Starting and Stopping the Engine..................................55

Starting the Engine ................................................ 55

Stopping the Engine .............................................. 56

Throttle‑Only Operation.................................................56

Trailering the Boat.........................................................56

Freezing Temperature Operation..................................56

Drain Plug and Bilge Pump............................................57

Protecting People in the Water............................................. 57

While You Are Cruising ................................................ 57

While Boat Is Stationary ............................................... 57

High‑Speed and High‑Performance Operation..................... 57

Passenger Safety in Pontoon Boats and Deck Boats.......... 57

Boats Having an Open Front Deck ............................... 57

Boats With Front‑Mounted, Raised Pedestal Fishing Seats

...................................................................................... 58

Wave and Wake Jumping..................................................... 58

Impact with Underwater Hazards......................................... 58

Drive Unit Impact Protection ......................................... 59

Operating with Low Water Inlets in Shallow Water............... 59

Conditions Affecting Operation............................................. 59

Weight Distribution (Passengers and Gear) Inside the Boat

.......................................................................................59

The Bottom of the Boat..................................................60

Cavitation.......................................................................60

Ventilation......................................................................60

Elevation and Climate....................................................60

Propeller Selection.........................................................60

Getting Started..................................................................... 61

20‑Hour Break‑In Period................................................61

After the Break‑In Period...............................................61

End of First Season Checkup........................................61

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Section 3 - On the Water

Additional Operation Instructions for Axius Systems

If your boat has DTS engines equipped with an Axius system, refer also to the Axius Operation Manual included with the boat.

Safe Boating Suggestions

To safely enjoy the waterways, familiarize yourself with local and all other governmental boating regulations and restrictions and consider the following suggestions.

Know and obey all nautical rules and laws of the waterways.

• We recommend that all powerboat operators complete a boating safety course. In the US, the U.S. Coast Guard Auxiliary, the Power Squadron, the Red Cross, and your state or provincial boating law enforcement agency provide courses. For more information in the US, call the Boat U.S. Foundation at 1‑800‑336‑BOAT (2628).

Perform safety checks and required maintenance.

• Follow a regular schedule and ensure that all repairs are properly made.

Check safety equipment on board.

• Here are some suggestions of the types of safety equipment to carry when boating:

• Approved fire extinguishers

• Signal devices: flashlight, rockets or flares, flag and whistle or horn

• Tools necessary for minor repairs

• Anchor and extra anchor line

• Manual bilge pump and extra drain plugs

• Drinking water

• Transistor radio

• Paddle or oar

• Spare propeller, thrust hubs, and an appropriate wrench

• First aid kit and instructions

• Water‑proof storage containers

• Spare operating equipment, batteries, bulbs and fuses

• Compass and map or chart of the area

• Personal flotation device (1 per person on board)

Watch for signs of weather change and avoid foul weather and rough-sea boating.

Tell someone where you are going and when you expect to return.

Passenger boarding.

• Stop the engine whenever passengers are boarding, unloading or are near the back (stern) of the boat. Shifting the drive unit into neutral is not sufficient.

Use personal flotation devices.

• Federal Law requires that there be a U. S. Coast Guard approved life jacket (personal flotation device), correctly sized and readily accessible for every person on board, plus a throwable cushion or ring. We strongly advise that everyone wear a life jacket at all times while in the boat.

Prepare other boat operators.

• Instruct at least 1 person on board in the basics of starting and operating the engine and boat handling in case the driver becomes disabled or falls overboard.

Do not overload your boat.

• Most boats are rated and certified for maximum load (weight) capacities (refer to your boat capacity plate). Know your boat's operating and loading limitations. Know if your boat will float if full of water. When in doubt, contact your authorized Mercury MerCruiser dealer or the boat manufacturer.

Ensure that everyone in the boat is properly seated.

• Do not allow anyone to sit or ride on any part of the boat that was not intended for such use. This includes the backs of seats, gunwales, transom, bow, decks, raised fishing seats and any rotating fishing seat; anywhere that sudden unexpected acceleration, sudden stopping, unexpected loss of boat control or sudden boat movement could cause a person to be thrown overboard or into the boat. Ensure that all passengers have a proper seat and are in it before any boat movement.

Never be under the influence of alcohol or drugs while boating (it is the law).

• They impair your judgment and greatly reduce your ability to react quickly.

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Know your boating area and avoid hazardous locations.

Be alert.

• The operator of the boat is responsible by law to maintain a proper lookout by sight and hearing. The operator must have an unobstructed view particularly to the front. No passengers, load or fishing seats should block the operators view when the boat is above idle or planing transition speed. Watch out for others, the water and your wake.

Never drive your boat directly behind a water skier in case the skier falls.

• As an example, your boat traveling at 40 km/h (25 MPH) will overtake a fallen skier who was 61 m (200 ft.) in front of you in 5 seconds.

Watch fallen skiers.

• When using your boat for water skiing or similar activities, always keep a fallen or down skier on the operator's side of the boat while returning to attend to the skier. The operator should always have the down skier in sight and never back up to the skier or anyone in the water.

Report accidents.

• Boat operators are required by law to file a Boating Accident Report with their state boating law enforcement agency when their boat is involved in certain boating accidents. A boating accident must be reported if 1) there is loss of life or probable loss of life, 2) there is personal injury requiring medical treatment beyond first aid, 3) there is damage to boats or other property where the damage value exceeds $500.00 or 4) there is complete loss of the boat. Seek further assistance from local law enforcement.

Carbon Monoxide Exposure

Be Alert To Carbon Monoxide Poisoning

Carbon monoxide (CO) is a deadly gas that is present in the exhaust fumes of all internal combustion engines, including the engines that propel boats, and the generators that power boat accessories. By itself, CO is odorless, colorless, and tasteless, but if you can smell or taste engine exhaust, you are inhaling CO.

Early symptoms of carbon monoxide poisoning, which are similar to the symptoms of seasickness and intoxication, include headache, dizziness, drowsiness, and nausea.

WARNING

Inhaling engine exhaust gases can result in carbon monoxide poisoning, which can lead to unconsciousness, brain damage, or death. Avoid exposure to carbon monoxide.

Stay clear from exhaust areas when engine is running. Keep the boat well‑ventilated while at rest or underway.

Stay Clear of Exhaust Areas

Engine exhaust gases contain harmful carbon monoxide. Avoid areas of concentrated engine exhaust gases. When engines are running, keep swimmers away from the boat, and do not sit, lie, or stand on swim platforms or boarding ladders. While underway, do not allow passengers to be positioned immediately behind the boat (platform dragging, teak/body surfing). This dangerous practice not only places a person in an area of high engine exhaust concentration, but also subjects them to the possibility of injury from the boat propeller.

Good Ventilation

Ventilate the passenger area, open side curtains or forward hatches to remove fumes.

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Example of desired air flow through the boat:

Poor Ventilation

Under certain running or wind conditions, permanently enclosed or canvas enclosed cabins or cockpits with insufficient ventilation may draw in carbon monoxide. Install one or more carbon monoxide detectors in your boat.

Although the occurrence is rare, on a very calm day, swimmers and passengers in an open area of a stationary boat that contains or is near a running engine may be exposed to a hazardous level of carbon monoxide.

1. Examples of poor ventilation while the boat is stationary:

a - Operating the engine when the boat is

moored in a confined space

b - Mooring close to another boat that has

its engine operating

2. Examples of poor ventilation while the boat is moving:

Basic Boat Operation (Non‑DTS Models)

Launching and Boat Operation

IMPORTANT: Install bilge drain plug prior to launching boat.

Operation Chart

BEFORE STARTING AFTER STARTING WHILE UNDERWAY AFTER STOPPING

Observe all gauges to

Install bilge drain plug.

Open engine hatch.

check condition of engine. If not normal, stop engine.

Check for fuel, oil, water, fluid and exhaust leaks.

a - Operating the boat with the

b - Operating the boat with no

Observe all gauges to check condition of engine. If not normal, stop engine.

Listen for the audio alarm.

trim angle of the bow too high

forward hatches open (station wagon effect)

Turn ignition key to the "OFF" position.

Turn battery switch to the "OFF" position.

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Operation Chart

BEFORE STARTING AFTER STARTING WHILE UNDERWAY AFTER STOPPING

Turn battery switch on.

Operate bilge blowers. Check steering operation. Close seacock, if equipped.

Open fuel shut off valve.

Open seacock, if equipped. Drain bilge.

Close the drain system.

Place sterndrive unit in full down/in position.

Check the engine oil.

Perform all other checks specified by your dealer and/or boat builder.

Listen for Audio Warning Alarm to sound when the ignition switch is in the "ON" position.

Check shift and throttle control operation.

Close fuel shut off valve.

Flush cooling system if in saltwater.

Starting and Stopping the Engine

NOTE: Only perform those functions applicable to your power package.

Starting the Engine

1. Check all items listed in the Operation Chart.

2. Place the remote control handle in neutral.

NOTICE

Without sufficient cooling water, the engine, the water pump, and other components will overheat and suffer damage. Provide a sufficient supply of water to the water inlets during operation.

WARNING

Explosive fumes contained in the engine compartment can cause serious injury or death from fire or explosion. Before starting the engine, operate the bilge blower or vent the engine compartment for at least five minutes.

3. Turn ignition key to "START". Release key when engine starts and allow switch to return to "ON" position. Allow engine to warm up (6‑10 minutes on first start of the day).

4. If engine does not start after 3 attempts:

a. Push the throttle only button and position the remote control handle/throttle lever to the 1/4 throttle position.

b. Turn ignition key to "START". Release key when engine starts and allow switch to return to "ON" position.

5. If engine does not start after step 4:

a. Move the remote control handle/throttle lever to full throttle position, then return to 1/4 throttle. b. Turn ignition key to "START". Release key when engine starts and allow switch to return to "ON" position.

6. Inspect the power package for fuel, oil, water and exhaust leaks.

7. Move control handle with a firm, quick motion forward to shift to forward gear, or backward to shift to reverse. After shifting, advance throttle to desired setting.

NOTICE

Shifting into gear at engine speeds above idle will damage the drive system. Shift the drive into gear only when the engine is operating at idle.

Stopping the Engine

1. Move the remote control handle to neutral/idle and allow the engine to slow to idle speed. If engine has been operated at high speed for a long period of time, allow the engine to cool at idle speed for 3 to 5 minutes.

2. Turn ignition key to the "OFF" position.

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Starting the Engine After It Has Been Stopped While In Gear

IMPORTANT: Avoid stopping the engine if the sterndrive unit is in gear. If the engine does stop, refer to the following procedure:

1. Push and pull repeatedly on the remote control handle until handle returns to the neutral/idle position. This may take several tries if the power package was operating above idle RPM when the engine stopped.

2. After the handle returns to the neutral/idle position, resume normal starting procedures.

Throttle‑Only Operation

1. Refer to Remote Controls section for remote control features.

2. Move the control lever to the idle/neutral position.

3. Depress and hold the throttle only button, and move the control lever to the idle/forward or idle/reverse position.

4. Advancing the control lever beyond the idle/forward or idle/reverse position will cause engine speed to increase.

IMPORTANT: Moving the control lever back to the idle/neutral position will disengage the throttle only button and allow the engine to shift into gear.

5. Throttle only mode is deactivated by moving the control lever to the idle/neutral position. Moving the control lever from the idle/neutral position to the idle/forward or idle/reverse position without pressing the throttle only button will shift the unit into the chosen gear.

Trailering the Boat

Your boat can be trailered with the sterndrive unit in the up or down position. Adequate clearance is required between the road and sterndrive when transporting.

If adequate road clearance is a problem, place the sterndrive unit in full trailer position and support it with an optional trailer kit which is available from your authorized Mercury MerCruiser dealer.

Freezing Temperature Operation

IMPORTANT: If the boat is operated during periods of freezing temperature, precautions must be taken to prevent freeze damage to the power package. Damage caused by freezing is not covered by Mercury MerCruiser Limited Warranty.

Drain Plug and Bilge Pump

The engine compartment in your boat is a natural place for water to collect. For this reason, boats are normally equipped with a drain plug and/or a bilge pump. It is very important to check these items on a regular basis to ensure that the water level does not come into contact with your power package. Components on your engine will be damaged if submerged. Damage caused by submersion is not covered by the Mercury MerCruiser Limited Warranty.

Basic Boat Operation (DTS Models)

Launching and Boat Operation

IMPORTANT: Install bilge drain plug prior to launching boat.

Operation Chart

BEFORE STARTING AFTER STARTING WHILE UNDERWAY AFTER STOPPING

Observe all gauges to check condition of engine. If not normal, stop engine.

Listen for the audio alarm.

Turn ignition key to the "OFF" position.

Turn battery switch to the "OFF" position.

Install bilge drain plug.

Open engine hatch.

Observe all gauges to check condition of engine. If not normal, stop engine.

Check for fuel, oil, water, fluid and exhaust leaks.

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Operation Chart

BEFORE STARTING AFTER STARTING WHILE UNDERWAY AFTER STOPPING

Turn battery switch on.

Operate bilge blowers. Check steering operation. Close seacock, if equipped.

Open fuel shut off valve.

Open seacock, if equipped. Drain bilge.

Close the drain system.

Place sterndrive unit in full down/in position.

Check the engine oil.

Perform all other checks specified by your dealer and/or boat builder.

Listen for Audio Warning Alarm to sound when the ignition switch is in the "ON" position.

Check shift and throttle control operation.

Close fuel shut off valve.

Flush cooling system if in saltwater.

Starting and Stopping the Engine

NOTE: Perform only those functions applicable to your power package.

Starting the Engine

1. Check all items listed in the Operation Chart.

2. Place the remote control handle in neutral.

NOTICE

Without sufficient cooling water, the engine, the water pump, and other components will overheat and suffer damage. Provide a sufficient supply of water to the water inlets during operation.

WARNING

NOTE: MerCruiser DTS models are equipped with SmartStart. The SmartStart feature incorporates push button starting. Rather than holding the start button or key switch to start the engine and then releasing it when the engine starts, SmartStart completely controls the starting process. When the start button is pushed, the DTS system signals the engine PCM to start the engine. If the engine does not start, the starting process times out after a few seconds or when the engine reaches 400 RPM. Attempting to start the engine with the engine already running will turn the engine off.

3. Turn ignition key to "RUN" position.

4. Turn the ignition key switch to the "START" position then release, or depress the start/stop button and release. If the engine is cold, allow the engine to operate at idle for 6–10 minutes or until the engine temperature reaches 60° C (140° F).

5. If the engine does not start after three attempts:

a. Push the throttle‑only button and position the remote control handle or throttle lever to the 1/4 throttle position. b. Turn the ignition key to "start." Release key when the engine starts and allow the switch to return to the "on" position.

6. If the engine does not start after step 5:

a. Move the remote control handle.throttle lever to the full throttle position, then return to 1/4 throttle. b. Turn the ignition key to "START." Release key when the engine starts and allow the switch to return to the "on" position.

7. Inspect the power package for fuel, oil, water, and exhaust leaks.

8. Move the control handle with a firm, quick motion forward to shift to forward gear, or backward to shift to reverse. After shifting, advance throttle to desired setting.

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NOTICE

Shifting into gear at engine speeds above idle will damage the drive system. Shift the drive into gear only when the engine is operating at idle.

Stopping the Engine

2. The engine can be stopped by any one of the following 4 methods:

a. Move the ignition key switch to the "ACCESSORY" or "OFF" position. The engine will stop and the control system will

be deactivated. b. Depress the start/stop button, if equipped. The engine will stop and the control system will remain active. c. Momentarily move the ignition key switch to the "START" position, then release immediately. The control system will

recognize that the engine is running and will stop the engine. The control system will remain active. Moving the ignition

key switch to the "START" position again will issue a start request to the control system and the control system will start

the engine, if appropriate. d. Activate the lanyard stop switch, if equipped. The engine will stop, but the control system will remain active. The control

system will not allow the engine to start if the lanyard stop switch is activated.

Throttle‑Only Operation

NOTE: When operating in throttle only (neutral) mode, the DTS Control System will not allow the engine speed to increase above 3500 RPM.

Zero effort remote controls: Zero effort remote controls have seperate throttle control and shift control levers. Advancing the throttle control lever beyond the idle position while the shift control lever is in the neutral position will cause engine speed to increase, but only up to the maximum neutral engine speed of 3500 RPM.

WARNING

The Digital Throttle and Shift (DTS) Zero Effort control can shift the engine or transmission at speeds greater than idle, causing unexpected boat movement, which may result in injury, death, or property damage due to loss of boat control. Always place the throttle control lever in the idle position before moving the shift control lever into forward or reverse gear position.

Panel Mount and Console Mount Remote Controls: Panel mount and console mount remote controls are equipped with a throttle only button. To activate throttle only mode:

1. Refer to Remote Controls section for remote control features.

2. Move the control lever to the idle/neutral position.

3. Depress the throttle only button, and move the control lever to the idle/forward or idle/reverse position. The DTS control system will sound two beeps on the audio warning horn to indicate throttle only mode is active. On console mount remote controls, the neutral light will begin to blink.

4. Advancing the control lever beyond the idle/forward or idle/reverse position will cause engine speed to increase.

IMPORTANT: Moving the control lever back to the idle/neutral position will deactivate the throttle only mode and allow the engine to shift into gear.

Trailering the Boat

Your boat can be trailered with the sterndrive unit in the up or down position. Adequate clearance is required between the road and sterndrive when transporting.

Freezing Temperature Operation

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21604

Drain Plug and Bilge Pump

Protecting People in the Water

While You Are Cruising

It is very difficult for a person in the water to take quick action to avoid a boat heading in their direction, even at slow speeds.

Always slow down and exercise extreme caution any time you are boating in an area where there might be people in the water. Whenever a boat is moving (even coasting) and the gear shift is in neutral, there is sufficient force by the water on the propeller

to cause the propeller to rotate. This neutral propeller rotation can cause serious injury.

While Boat Is Stationary

WARNING

A spinning propeller, a moving boat, or any solid device attached to the boat can cause serious injury or death to swimmers. Stop the engine immediately whenever anyone in the water is near your boat.

Shift into neutral and shut off the engine before allowing people to swim or be in the water near your boat.

High‑Speed and High‑Performance Operation

If your boat is considered a high‑speed or high‑performance boat with which you are unfamiliar, we recommend that you never operate it at its high speed capability without first requesting an initial orientation and demonstration ride with your dealer or an operator experienced with your boat. For additional information, refer to Hi-Performance Boat Operation booklet (90‑849250‑R2) from your dealer, distributor or Mercury Marine.

Passenger Safety in Pontoon Boats and Deck Boats

Whenever the boat is in motion, observe the location of all passengers. Do not allow any passengers to stand or use seats other than those designated for traveling faster than idle speed. A sudden reduction in boat speed, such as plunging into a large wave or wake, a sudden throttle reduction, or a sharp change of boat direction, could throw them over the front of boat. Falling over the front of the boat between the two pontoons will position them to be run over.

Boats Having an Open Front Deck

No one should ever be on the deck in front of the fence while the boat is in motion. Keep all passengers behind the front fence or enclosure.

Persons on the front deck could easily be thrown overboard or persons dangling their feet over the front edge could get their legs caught by a wave and pulled into the water.

mc79555-1

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WARNING

Sitting or standing in an area of the boat not designed for passengers at speeds above idle can cause serious injury or death. Stay back from the front end of deck boats or raised platforms and remain seated while the boat is in motion.

Boats With Front‑Mounted, Raised Pedestal Fishing Seats

Elevated fishing seats are not intended for use when the boat is traveling faster than idle or trolling speed. Sit only in seats designated for traveling at faster speeds.

Any unexpected, sudden reduction in boat speed could result in the elevated passenger falling over the front of the boat.

mc79557-1

Wave and Wake Jumping

WARNING

Wave or wake jumping can cause serious injury or death from occupants being thrown within or out of the boat. Avoid wave or wake jumping whenever possible.

mc79680-1

Operating recreational boats over waves and wakes is a natural part of boating. However, when this activity is done with enough speed to force the boat hull partially or completely out of the water, certain hazards arise, particularly when the boat re‑enters the water.

The primary concern is the boat changing direction while in the midst of the jump. In such cases the landing may cause the boat to violently veer in a new direction. Such a sharp change in direction or turn can cause occupants to be thrown out of their seats or out of the boat.

There is another less common hazardous result from allowing your boat to launch off of a wave or wake. If the bow of your boat pitches down far enough while airborne, upon water contact it may penetrate under the water surface and submarine for an instant. This will bring the boat nearly to a stop in an instant and can send the occupants flying forward. The boat may also veer sharply to one side.

Impact with Underwater Hazards

Reduce speed and proceed with caution whenever you're driving a boat in shallow water or in areas where the waters are suspected of having underwater obstacles that could be struck by the underwater drive components, rudder or the boat bottom.

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IMPORTANT: The most important thing you can do to help reduce injury or impact damage from striking a floating or underwater object is control the boat speed. Under these conditions, boat speed should be kept to a maximum speed of 24 to 40 km/h (15 to 25 mph).

Striking a floating/underwater object may result in an infinite number of situations. Some of these situations could result in the following:

• The boat could move suddenly in a new direction. Such a sharp change in direction or turn can cause occupants to be thrown out of their seats or out of the boat.

• A rapid reduction in speed. This will cause occupants to be thrown forward, even out of the boat.

• Impact damage to the underwater drive components, rudder and/or boat.

Keep in mind, one of the most important things you can do to help reduce injury or impact damage in these situations is control the boat speed. Boat speed should be kept to a minimum planing speed when driving in waters known to have underwater obstacles.

After striking a submerged object, stop the engine as soon as possible and inspect the drive system for any broken or loose parts. If damage is present or suspected, the power package should be taken to an authorized Mercury MerCruiser dealer for a thorough inspection and necessary repair.

The boat should be checked for hull fractures, transom fractures and water leaks. Operating with damaged underwater drive components, rudder or boat bottom could cause additional damage to other parts of

the power package, or could affect control of the boat. If continued operation is necessary, do so at greatly reduced speeds.

WARNING

Operating a boat or engine with impact damage can result in product damage, serious injury, or death. If the vessel experiences any form of impact, have an authorized Mercury Marine dealer inspect and repair the vessel or power package.

Drive Unit Impact Protection

The power trim hydraulic system is designed to provide impact protection for the sterndrive unit. If a submerged object is struck while the boat is moving forward, the hydraulic system will cushion the kickup of the sterndrive unit as it clears the object, reducing damage to the unit. After the sterndrive unit has cleared the object, the hydraulic system allows the sterndrive unit to return to its original operating position, preventing loss of steering control and engine overspeed.

Use extreme caution when operating in shallow water or where underwater objects are known to be present. No impact protection is provided in reverse; use extreme care to prevent striking submerged objects while operating in reverse.

IMPORTANT: Impact protection system cannot be designed to ensure total protection from impact damage under all conditions.

Operating with Low Water Inlets in Shallow Water

a - Low Water Inlets

mc75827-1

NOTICE

Operating in shallow water can cause severe engine damage due to clogged water inlets. Ensure that the water inlets on the gearcase do not ingest sand, silt, or other debris, which can restrict or stop cooling water supply to the engine.

Extreme care should be exercised when operating a boat equipped with low water inlets while maneuvering in shallow water. Also, avoid beaching a boat with the engine operating.

Conditions Affecting Operation

Weight Distribution (Passengers and Gear) Inside the Boat

Shifting weight to rear (stern):

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• Generally increases speed and engine RPM

• Causes bow to bounce in choppy water

• Increases danger of following wave splashing into the boat when coming off plane

• At extremes, can cause the boat to porpoise

Shifting weight to front (bow):

• Improves ease of planing

• Improves rough water ride

• At extremes, can cause the boat to veer back and forth (bow steer)

The Bottom of the Boat

To maintain maximum speed, the boat bottom should be:

• Clean, free of barnacles and marine growth

• Free of distortion; nearly flat where it contacts the water

• Straight and smooth, fore and aft

Marine vegetation may accumulate when the boat is docked. This growth must be removed before operation; it may clog the water inlets and cause the engine to overheat.

Cavitation

Cavitation occurs when water flow cannot follow the contour of a fast‑moving underwater object, such as a gear housing or a propeller. Cavitation increases propeller speed while reducing boat speed. Cavitation can seriously erode the surface of the gear housing or the propeller. Common causes of cavitation are:

• Weeds or other debris snagged on the propeller

• Bent propeller blade

• Raised burrs or sharp edges on the propeller

Ventilation

Ventilation is caused by surface air or exhaust gases that are introduced around the propeller resulting in propeller speed‑up and a reduction in boat speed. Air bubbles strike the propeller blade and cause erosion of the blade surface. If allowed to continue, eventual blade failure (breakage) will occur. Excessive ventilation is usually caused by:

• Drive unit trimmed out too far

• A missing propeller diffuser ring

• A damaged propeller or gear housing, which allows exhaust gases to escape between propeller and gear housing

• Drive unit installed too high on transom

Elevation and Climate

Elevation and climate changes will affect the performance of your power package. Loss of performance can be caused by:

• Higher elevations

• Higher temperatures

• Low barometric pressures

• High humidity

For you to have optimum engine performance under changing weather conditions, it is essential that the engine be propped to allow the engine to operate at or near the top end of the specified maximum RPM range with a normal boat load during your normal boating weather conditions.

In most cases, recommended RPM can be achieved by changing to a lower pitch propeller.

Propeller Selection

IMPORTANT: The engines covered in this manual are equipped with an RPM rev‑limiter that is set to an upper RPM limit. This limit, which is slightly above the normal operating range of the engine, helps prevent damage from excessive engine RPM. Once the RPM returns to the recommended operating RPM range, normal engine operation resumes.

The boat manufacturer and the selling dealer are responsible for equipping the power package with the correct propeller. Refer to Mercury Marine's web page http://www.mercurymarine.com/everything_you_need_to_know_about_propellers6.

Select a propeller that will allow the engine power package to operate at or near the top end of the recommended WOT operating RPM range with a normal load.

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If full‑throttle operation is below the recommended range, the propeller must be changed to prevent loss of performance and possible engine damage. On the other hand, operating an engine above the recommended operating RPM range will cause higher than normal wear and damage.

After initial propeller selection, the following common problems may require that the propeller be changed to a lower pitch.

• Warmer weather and greater humidity cause a loss of RPM.

• Operating in a higher elevation causes a loss of RPM.

• Operating with a dirty boat bottom causes a loss of RPM.

• Operating with increased load (additional passengers, pulling skiers) causes a loss of RPM.

For better acceleration, such as is needed for waterskiing, use the next lower pitch propeller. When not pulling skiers, do not operate at full throttle when using the lower pitch propeller.

Getting Started

20‑Hour Break‑In Period

IMPORTANT: The first 20 hours of operation is the engine break‑in period. Correct break‑in is essential to obtain minimum oil consumption and maximum engine performance. During this break‑in period, the following rules must be observed:

• Do not operate below 1500 RPM for extended periods of time for the first 10 hours. Shift into gear as soon as possible after starting and advance the throttle above 1500 rpm if conditions permit safe operation.

• Do not operate at one speed consistently for extended periods.

• Do not exceed 3/4 throttle during the first 10 hours. During the next 10 hours, occasional operation at full throttle is permissible (5 minutes at a time maximum).

• Avoid full throttle acceleration from idle speed.

• Do not operate at full throttle until the engine reaches normal operating temperature.

• Frequently check engine oil level. Add oil as needed. It is normal for oil consumption to be high during the break‑in period.

After the Break‑In Period

To help extend the life of your Mercury MerCruiser power package, follow these recommendations:

• Ensure that propeller allows the engine to operate at or near the top of the specified wide‑open‑throttle (WOT) RPM range. Refer to Specifications and Maintenance.

• Operate the engine at 3/4 throttle or lower. Refrain from prolonged operation at WOT RPM.

• Change the engine oil and oil filter. Refer to Maintenance.

End of First Season Checkup

At the end of the first season of operation, contact an authorized Mercury MerCruiser dealer to discuss and/or perform scheduled maintenance items. If you are in an area where the product is operated continuously, year‑round, you should contact your dealer at the end of the first 100 hours of operation or once yearly, whichever occurs first.

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Notes:

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Section 4 - Specifications

350/377 MAG ECT and SeaCore 350/377 ECT—Specifications

.............................................................................................. 64

Fuel Requirements........................................................64

Fuel Ratings .......................................................... 64

Using Reformulated (Oxygenated) Gasoline (USA

Only) ...................................................................... 64

Gasoline Containing Alcohol ................................. 64

Engine Oil......................................................................64

350 MAG ECT, SeaCore 350 MAG ECT.......................65

377 MAG ECT, SeaCore 377 MAG ECT.......................66

350/377 MAG and SeaCore 350/377 MAG—Specifications

.............................................................................................. 66

Fuel Requirements........................................................66

Fuel Ratings .......................................................... 66

Using Reformulated (Oxygenated) Gasolines (USA

Only) ...................................................................... 67

Gasolines Containing Alcohol ............................... 67

Engine Oil......................................................................67

350 MAG, SeaCore 350 MAG.......................................68

377 MAG, SeaCore 377 MAG.......................................69

Fluid Specifications............................................................... 69

Engine—350/377 MAG ECT and SeaCore 350/377 MAG

ECT................................................................................69

Engine—350/377 MAG and SeaCore 350/377 MAG....69

Alpha Sterndrive............................................................70

Bravo Sterndrives..........................................................70

Power‑Assisted Steering and Power Trim Fluids..........70

Approved Power‑Assisted Steering Fluids ............ 70

Approved Power Trim Fluids ................................. 70

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350/377 MAG ECT and SeaCore 350/377 ECT—Specifications

Fuel Requirements

NOTICE

Running out of fuel can damage catalyst components. Do not allow the fuel tanks to become empty during operation.

IMPORTANT: Use of improper gasoline can damage your engine. Engine damage resulting from the use of improper gasoline is considered misuse of the engine and will not be covered under the limited warranty.

Fuel Ratings

Mercury MerCruiser engines will operate satisfactorily with any major brand of unleaded gasoline that meets the following specifications:

USA and Canada ‑ A posted pump Octane Rating of 87 (R+M)/2, minimum. Premium gasoline [92 (R+M)/2 Octane] is also acceptable. Do not use leaded gasoline.

Outside USA and Canada ‑ A posted pump Octane Rating of 90 RON, minimum. Premium gasoline (98 RON) is also acceptable. If unleaded gasoline is not available, use a major brand of leaded gasoline.

Using Reformulated (Oxygenated) Gasoline (USA Only)

Reformulated gasoline is required in certain areas of the USA and are acceptable for use in your Mercury MerCruiser engine. The two types of oxygenates used in these fuels are alcohol (ethanol) and ether (MTBE or ETBE). If ethanol is the oxygenate that is used in the gasoline in your area, refer to Gasoline Containing Alcohol.

Gasoline Containing Alcohol

If the gasoline in your area contains either methanol (methyl alcohol) or ethanol (ethyl alcohol), be aware of possible adverse effects. These adverse effects are more severe with methanol and worsen according to the percentage of alcohol in the fuel.

Alcohol in gasoline can absorb moisture from the air, causing the water and the alcohol to separate from the gasoline in the fuel tank.

IMPORTANT: The fuel system components on your Mercury MerCruiser engine will withstand up to 10% alcohol content in the gasoline. We do not know what percentage your boat's fuel system will withstand. Contact your boat manufacturer for specific recommendations on your boat's fuel system components (fuel tanks, fuel lines, and fittings).

Be aware that gasoline containing alcohol may cause increased:

• Corrosion of metal parts

• Deterioration of rubber or plastic parts

• Fuel permeation through rubber fuel lines

• Starting and operating difficulties

WARNING

Fuel leakage is a fire or explosion hazard, which can cause serious injury or death. Periodically inspect all fuel system components for leaks, softening, hardening, swelling, or corrosion, particularly after storage. Any sign of leakage or deterioration requires replacement before further engine operation.

IMPORTANT: If you use gasoline that contains or might contain alcohol, you must increase the frequency of inspection for leaks and abnormalities. IMPORTANT: When operating a Mercury MerCruiser engine on gasoline containing alcohol, storage of gasoline in the fuel tank for long periods should be avoided. Long periods of storage, common to boats, create unique problems. In cars alcohol‑blend fuels normally are consumed before they can absorb enough moisture to cause trouble, but boats often sit idle long enough for phase separation to take place. In addition, internal corrosion may take place during storage if alcohol has washed protective oil films from internal components.

Engine Oil

For optimum engine performance and maximum protection, use the following oil:

Application

All MerCruiser engines Mercury MerCruiser Full‑Synthetic Engine Oil, 20W‑40, NMMA FC‑W rated

Page 64 90-8M0050539 eng MAY 2011

Recommended Oil

Page 73

Section 4 - Specifications

Mercury Full-Synthetic MerCruiser Engine Oil, 20W-40, NMMA FC-W rated

MerCruiser/Quicksilver 25W-40 Synthetic Blend, NMMA FC-W rated 4-cycle MerCruiser oil

Other recognized brands of NMMA FC-W rated oils

SAE 20W

SAE30W

SAE40W

AIR TEMPERATURE

ORDER OF PREFERENCE

(32° F)

0° C

(50° F)

10° C

32878

Mercury/Quicksilver 25W-40, NMMA FC-W rated 4-cycle MerCruiser oil

IMPORTANT: Lubrication requirements for catalyzed engines differ from the requirements for non‑catalyzed engines. Some marine‑grade lubricants contain high levels of phosphorus, which can damage the catalyst system on MerCruiser engines. Although these high‑phosphorus lubricants may allow acceptable engine performance, exposure over time will damage the catalyst. Catalysts damaged by lubricants containing high levels of phosphorus may not be covered by the MerCruiser Limited Warranty.

If Mercury MerCruiser Full‑Synthetic, 20W‑40 oil is unavailable, use the following lubricants, listed in order of recommendation. If you are servicing a catalyst engine, use these for short periods of time only.

1. Mercury/Quicksilver 25W‑40 Synthetic Blend, NMMA FC‑W–rated 4‑cycle MerCruiser oil

2. Mercury/Quicksilver 25W‑40, NMMA FC‑W–rated 4‑cycle MerCruiser oil

3. Other recognized brands of NMMA FC‑W–rated 4‑cycle oils

4. A good‑grade, straight‑weight detergent automotive oil according to the last row of the operating chart below.

NOTE: We do not recommend non‑detergent oils, multi‑viscosity oils (other than as specified), non FC‑W–rated synthetic oils, low‑quality oils, or oils that contain solid additives.

350 MAG ECT, SeaCore 350 MAG ECT

NOTE: Performance specifications are obtained and corrected in accordance with SAE J1228/ISO 8665 Crankshaft Power. All measurements are taken with the engine at normal operating temperature. RPM range is measured using an accurate service tachometer with the engine at normal operating temperatures. Oil pressure must be checked with the engine at normal operating temperature.

NOTE: Oil pressure specifications are for reference and may vary.

IMPORTANT: Do not mix spark plug types in an engine. All spark plugs should have the same part number.

Propshaft power

Displacement

Alternator amperage

RPM

Minimum oil pressure

Thermostat

Timing at idle

224 kW (300 hp)

5.7 L (350 cid)

Hot 72 A

Cold 65 A

WOT 4800–5200

Rev limiter 5350

Idle in neutral 550

At 2000 RPM 124 kPa (18 psi)

At idle 41 kPa (6 psi)

Seawater‑cooled models 71° C (160° F)

MPI models with Closed Cooling 77° C (170° F)

Not Adjustable

90-8M0050539 eng MAY 2011 Page 65

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Section 4 - Specifications

Firing order

Minimum battery rating

Spark plug type

Spark plug gap

Emission control system

Non‑DTS models 750 CCA, 950 MCA, 180 Ah

DTS models 800 CCA, 1000 MCA, 190 Ah

Electronic control (EC), heated oxygen sensor

1‑8‑4‑3‑6‑5‑7‑2

AC Platinum (AC 41‑993)

AC Platinum (AC 41‑101)

1.5 mm (0.060 in.)

(HO2S), catalyst

377 MAG ECT, SeaCore 377 MAG ECT

NOTE: Oil pressure specifications are for reference and may vary.

IMPORTANT: Do not mix spark plug types in an engine. All spark plugs should have the same part number.

Propshaft power

Displacement

Alternator amperage

RPM

Minimum oil pressure

Thermostat

Timing at idle

Firing order

Minimum battery rating

Spark plug type

Spark plug gap

Emission control system

Hot 72 A

Cold 65 A

WOT 4800–5200

Rev limiter 5350

Idle in neutral 550

At 2000 RPM 124 kPa (18 psi)

At idle 41 kPa (6 psi)

Seawater‑cooled models 71° C (160° F)

MPI models with Closed Cooling 77° C (170° F)

Non‑DTS models 750 CCA, 950 MCA, 180 Ah

DTS models 800 CCA, 1000 MCA, 190 Ah

Electronic control (EC), heated oxygen sensor

293 kW (320 hp)

6.2 L (377 cid)

Not Adjustable

1‑8‑4‑3‑6‑5‑7‑2

AC Platinum (AC 41‑993)

AC Platinum (AC 41‑101)

1.5 mm (0.060 in.)

(HO2S), catalyst

350/377 MAG and SeaCore 350/377 MAG—Specifications

Fuel Requirements

IMPORTANT: Use of improper gasoline can damage your engine. Engine damage resulting from the use of improper gasoline is considered misuse of the engine and any resulting damage will not be covered under the limited warranty.

Fuel Ratings

Mercury MerCruiser engines will operate satisfactorily when using a major brand of unleaded gasoline meeting the following specifications:

USA and Canada—having a posted pump Octane Rating of 87 (R+M)/2 minimum. Premium gasoline 92 (R+M)/2 Octane is also acceptable. Do not use leaded gasoline.

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Section 4 - Specifications

Outside USA and Canada—having a posted pump Octane Rating of 91 RON minimum. Premium gasoline (98 RON) is also acceptable. If unleaded gasoline is not available, use a major brand of leaded gasoline.

Using Reformulated (Oxygenated) Gasolines (USA Only)

This type of gasoline is required in certain areas of the USA. The 2 types of oxygenates used in these fuels is alcohol (ethanol) or ether (MTBE or ETBE). If Ethanol is the oxygenate that is used in the gasoline in your area, refer to Gasolines Containing Alcohol.

These reformulated gasolines are acceptable for use in your Mercury MerCruiser engine.

Gasolines Containing Alcohol

If the gasoline in your area contains either methanol (methyl alcohol) or ethanol (ethyl alcohol), you should be aware of certain adverse effects that can occur. These adverse effects are more severe with methanol. Increasing the percentage of alcohol in the fuel can also worsen these adverse effects.

Some of these adverse effects are caused because the alcohol in the gasoline can absorb moisture from the air, resulting in a separation of the water‑alcohol mixture from the gasoline in the fuel tank.

The fuel system components on your Mercury MerCruiser engine will withstand up to 10% alcohol content in the gasoline. We do not know what percentage your boat's fuel system will withstand. Contact your boat manufacturer for specific recommendations on the boat's fuel system components (fuel tanks, fuel lines, and fittings). Be aware that gasolines containing alcohol may increase:

• Corrosion of metal parts

• Deterioration of rubber or plastic parts

• Fuel permeation through the rubber fuel lines

• Difficulty starting and operating the engine

WARNING

Because of the possible adverse effects of alcohol in gasoline, we recommend only alcohol‑free gasoline when possible. If the only fuel available contains alcohol or if you do not know whether the fuel contains alcohol, inspect for leaks and abnormalities more frequently.

IMPORTANT: When operating a Mercury MerCruiser engine on gasoline containing alcohol, do not store the gasoline in the fuel tank for long periods. Cars normally consume alcohol‑blend fuels before they can absorb enough moisture to cause trouble, boats often sit idle long enough for phase separation to take place. Internal corrosion may take place during storage if alcohol has washed protective oil films from internal components.

Engine Oil

To help obtain optimum engine performance and to provide maximum protection, we recommend using the following oil:

Application Recommended Oil

All MerCruiser engines Mercury MerCruiser Full‑Synthetic Engine Oil, 20W‑40, NMMA FC‑W rated

If the Mercury MerCruiser Full‑Synthetic, 20W‑40 oil is unavailable, you can use the following lubricants, listed in order of recommendation:

1. Mercury/Quicksilver 25W‑40 Synthetic Blend, NMMA FC‑W–rated 4‑cycle MerCruiser oil

2. Mercury/Quicksilver 25W‑40, NMMA FC‑W–rated 4‑cycle MerCruiser oil

3. Other recognized brands of NMMA FC‑W–rated 4‑cycle oils

4. A good‑grade, straight‑weight detergent automotive oil per the operating chart below.

90-8M0050539 eng MAY 2011 Page 67

Page 76

Section 4 - Specifications

Mercury Full-Synthetic MerCruiser Engine Oil, 20W-40, NMMA FC-W rated

MerCruiser/Quicksilver 25W-40 Synthetic Blend, NMMA FC-W rated 4-cycle MerCruiser oil

Other recognized brands of NMMA FC-W rated oils

SAE 20W

SAE30W

SAE40W

AIR TEMPERATURE

ORDER OF PREFERENCE

(32° F)

0° C

(50° F)

10° C

32878

Mercury/Quicksilver 25W-40, NMMA FC-W rated 4-cycle MerCruiser oil

NOTE: We do not recommend non‑detergent oils, multi‑viscosity oils (other than as specified), non FC‑W–rated synthetic oils, low‑quality oils, or oils that contain solid additives.

350 MAG, SeaCore 350 MAG

NOTE: Oil pressure specifications are for reference and may vary.

IMPORTANT: Do not mix spark plug types in an engine. All spark plugs should have the same part number.

Propshaft power

Displacement

Alternator amperage

RPM

Minimum oil pressure

Thermostat

Timing at idle

Firing order

Minimum battery rating

Spark plug type

Spark plug gap

Emission control system

Hot 72 A

Cold 65 A

WOT 4800–5200

Rev limiter 5350

Idle in neutral 550

At 2000 RPM 124 kPa (18 psi)

At idle 41 kPa (6 psi)

Seawater‑cooled models 71° C (160° F)

MPI models with closed cooling 77° C (170° F)

Non‑DTS models 750 CCA, 950 MCA, 180 Ah

DTS models 800 CCA, 1000 MCA, 190 Ah

224 kW (300 hp)

5.7 L (350 cid)

Not Adjustable

1‑8‑4‑3‑6‑5‑7‑2

AC Platinum (AC 41‑993)

AC Platinum (AC 41‑101)

1.5 mm (0.060 in.)

Electronic engine control (EC)

Page 68 90-8M0050539 eng MAY 2011

Page 77

Section 4 - Specifications

377 MAG, SeaCore 377 MAG

NOTE: Oil pressure specifications are for reference and may vary.

IMPORTANT: Do not mix spark plug types in an engine. All spark plugs should have the same part number.

Propshaft power

Displacement

Alternator amperage

RPM

Minimum oil pressure

Thermostat

Timing at idle

Firing order

Minimum battery rating

Spark plug type

Spark plug gap

Emission control system

293 kW (320 hp)

6.2 L (377 cid)

Hot 72 A

Cold 65 A

WOT 4800–5200

Rev limiter 5350

Idle in neutral 550

At 2000 RPM 124 kPa (18 psi)

At idle 41 kPa (6 psi)

Seawater‑cooled models 71° C (160° F)

MPI models with closed cooling 77° C (170° F)

Not Adjustable

1‑8‑4‑3‑6‑5‑7‑2

Non‑DTS models 750 CCA, 950 MCA, 180 Ah

DTS models 800 CCA, 1000 MCA, 190 Ah

AC Platinum (AC 41‑993)

AC Platinum (AC 41‑101)

1.5 mm (0.060 in.)

Electronic engine control (EC)

Fluid Specifications

IMPORTANT: All capacities are approximate fluid measures.

Engine—350/377 MAG ECT and SeaCore 350/377 MAG ECT

IMPORTANT: Always use the dipstick to determine the exact quantity of oil or fluid required.

All Models Capacity Fluid Type

Engine oil (with filter) 4.25 L (4.50 US qt) Mercury Full‑Synthetic MerCruiser Engine Oil 20W‑40

Seawater cooling system (winterization use only)

Closed cooling system 18 L (19 US qt)

Engine—350/377 MAG and SeaCore 350/377 MAG

IMPORTANT: Always use the dipstick to determine the exact quantity of oil or fluid required.

20 L (21 US qt) Propylene glycol and purified water

Mercury Extended Life Coolant Antifreeze or extended life

ethylene glycol 5/100 antifreeze mixed 50/50 with purified water

90-8M0050539 eng MAY 2011 Page 69

Page 78

Section 4 - Specifications

350 MAG and 377 MAG models Capacity Fluid Type

Engine oil (with filter) 4.25 L (4.5 US qt) Mercury MerCruiser Full‑Synthetic Engine Oil, 20W‑40

Seawater cooling system (winterization use only)

Closed cooling system 19 L (20 US qt)

20 L (21 US qt) Propylene glycol and purified water

Mercury Extended Life Coolant Antifreeze or extended‑life ethylene glycol 5/100 antifreeze mixed 50/50 with purified water

Alpha Sterndrive

NOTE: Oil capacity includes gear lube monitor.

Model Capacity Fluid Type

Alpha One 1892 mL (64 oz) High Performance Gear Lubricant

Bravo Sterndrives

NOTE: Oil capacity includes gear lube monitor.

Model Capacity Fluid Type

Bravo One 2736 mL (92‑1/2 oz)

Bravo Two 3209 mL (108‑1/2 oz)

Bravo Three (single seawater pickup) 2972 mL (100‑1/2 oz)

Bravo Three (dual seawater pickup) 2736 mL (92‑1/2 oz)

High Performance Gear Lubricant

Power‑Assisted Steering and Power Trim Fluids

Approved Power-Assisted Steering Fluids

Description Part Number

Power Trim and Steering Fluid 92‑858074K01

Approved Power Trim Fluids

Description Part Number

Power Trim and Steering Fluid 92‑858074K01

SAE Engine Oil 10W‑30

SAE Engine Oil 10W‑40

Obtain locally

Page 70 90-8M0050539 eng MAY 2011

Page 79

Table of Contents

Section 5 - Maintenance

Additional Operation Instructions for Axius Systems ........... 73

Owner/Operator Responsibilities.......................................... 73

Dealer Responsibilities......................................................... 73

Maintenance......................................................................... 73

Do‑It‑Yourself Maintenance Suggestions............................. 73

Inspection............................................................................. 74

Maintenance Schedules—350/377 MAG ECT and SeaCore

350/377 MAG ECT............................................................... 74

Routine Maintenance.....................................................74

Scheduled Maintenance................................................75

Maintenance Schedules—350/377 MAG and SeaCore 350/377

MAG..................................................................................... 76

Routine Maintenance.....................................................76

Scheduled Maintenance................................................77

Maintenance Log.................................................................. 78

Engine Oil—350/377 MAG ECT and SeaCore 350/377 MAG

ECT...................................................................................... 79

Checking........................................................................79

Filling.............................................................................79

Changing Oil and Filter..................................................80

Engine Oil Drain Pump..................................................80

Changing Filter..............................................................80

Engine Oil—350/377 MAG and SeaCore 350/377 MAG...... 81

Checking........................................................................81

Filling.............................................................................81

Changing Oil and Filter..................................................82

Engine Oil Drain Pump..................................................82

Changing Filter..............................................................82

Power Steering Fluid............................................................ 83

Power Steering Fluid—350/377 MAG ECT and SeaCore

350/377 MAG ECT........................................................83

Checking ............................................................... 83

Filling ..................................................................... 83

Changing ............................................................... 83

Power Steering Fluid—350/377 MAG and SeaCore

350/377 MAG.................................................................83

Checking ............................................................... 83

Filling ..................................................................... 84

Changing ............................................................... 84

Engine Coolant—350/377 MAG ECT and SeaCore 350/377

MAG ECT............................................................................. 84

Checking........................................................................84

Filling.............................................................................85

Changing ......................................................................86

Engine Coolant—350/377 MAG and SeaCore 350/377 MAG

.............................................................................................. 86

Checking ....................................................................... 86

Filling ............................................................................ 87

Changing ..................................................................... 87

Alpha Sterndrive Gear Lube................................................. 87

Checking ....................................................................... 88

Filling ............................................................................ 88

Changing ...................................................................... 88

Sterndrive Gear Lube........................................................... 90

Checking........................................................................90

Filling.............................................................................90

Changing.......................................................................90

Power Trim Fluid.................................................................. 92

Checking ....................................................................... 92

Filling ............................................................................ 92

Changing ...................................................................... 93

Battery.................................................................................. 93

Multiple EFI Engine Battery Precautions.......................93

Scheduled Maintenance Specifically for 350/377 MAG ECT and

SeaCore 350/377 MAG ECT ............................................... 93

Cleaning the Flame Arrestor..........................................93

Positive Crankcase Ventilation Valve (PCV) ......... 94

Changing ........................................................ 94

Cleaning the IAC Muffler................................................95

Scheduled Maintenance Specifically for 350/377 MAG and

SeaCore 350/377 MAG........................................................ 96

Cleaning the Flame Arrestor..........................................96

Positive Crankcase Ventilation Valve (PCV) ......... 97

Changing ........................................................ 97

Water‑Separating Fuel Filter (MPI)....................................... 97

Water‑Separating Fuel Filter..........................................97

GEN II Models...............................................................97

Removal ................................................................ 97

Installation ............................................................. 98

GEN III Models..............................................................98

Removal ................................................................ 98

Installation ............................................................. 99

Lubrication............................................................................ 99

Steering System............................................................99

Throttle Cable..............................................................101

Shift Cable ‑ Typical.....................................................101

Sterndrive U‑joint Shaft Splines And O‑rings (Sterndrive

Unit Removed).............................................................102

Engine Coupler............................................................102

Driveshaft Extension Models.......................................103

Propellers........................................................................... 103

Propeller Repair...........................................................103

Alpha Propeller Removal.............................................103

Alpha Propeller Installation..........................................103

Bravo One Propeller Removal.....................................104

Bravo One Propeller Installation..................................104

Bravo Two Propeller Removal.....................................105

Bravo Two Propeller Installation..................................106

Bravo Three Propeller Removal..................................106

Bravo Three Propeller Installation...............................107

Serpentine Drive Belt.......................................................... 109

Checking ..................................................................... 109

Replacing Belt and/or Adjusting Tension .................... 109

Corrosion Protection........................................................... 110

Corrosion Information..................................................110

Maintaining Ground Circuit Continuity.........................110

MerCathode System Battery Requirements................110

Anodes and MerCathode System Locations...............110

Checking the Quicksilver MerCathode System...........111

Power Package Exterior Surfaces...............................112

Boat Bottom Care........................................................112

Anti‑fouling Paint..........................................................112

Sterndrive Surface Care..............................................114

Flushing the Power Package—Alpha................................. 114

Flushing Attachments ................................................. 115

Sterndrive Water Pickups ........................................... 115

90-8M0050539 eng MAY 2011 Page 71

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Section 5 - Maintenance

Flushing the Power Package—Bravo................................. 116

General Information.....................................................116

Flushing the Power Package.......................................116

Flushing Attachments .......................................... 116

Sterndrive Water Pickups .................................... 117

Alternative Water Pickups ................................... 118

SeaCore Power Package Flushing Procedure............120

Models Using The Sterndrive Water Pickup ........ 120

Page 72 90-8M0050539 eng MAY 2011

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Section 5 - Maintenance

Additional Operation Instructions for Axius Systems

If your boat has DTS engines equipped with an Axius system, refer also to the Axius Operation Manual included with the boat.

Owner/Operator Responsibilities

It is the operator's responsibility to perform all safety checks, to ensure that all lubrication and maintenance instructions are complied with for safe operation and to return the unit to an authorized Mercury MerCruiser dealer for a periodic checkup.

Normal maintenance service and replacement parts are the responsibility of the owner/operator and as such, are not considered defects in workmanship or material within the terms of the warranty. Individual operating habits and usage contribute to the need for maintenance service.

Proper maintenance and care of your power package will ensure optimum performance and dependability and will keep your overall operating expenses at a minimum. See your authorized Mercury MerCruiser dealer for service aids.

Dealer Responsibilities

In general, a dealer's responsibilities to the customer include predelivery inspection and preparation such as:

• Ensure that the boat is properly equipped.

• Prior to delivery, make certain that the Mercury MerCruiser power package and other equipment are in proper operating condition.

• Make all necessary adjustments for maximum efficiency.

• Familiarize the customer with the on‑board equipment.

• Explain and demonstrate the operation of the power package and boat.

• Provide you with a copy of a Predelivery Inspection Checklist.

• Your selling dealer should fill out the Warranty Registration Card completely and mail it to the factory immediately upon sale of the new product.

Maintenance

WARNING

Performing service or maintenance without first disconnecting the battery can cause product damage, personal injury, or death due to fire, explosion, electrical shock, or unexpected engine starting. Always disconnect the battery cables from the battery before maintaining, servicing, installing, or removing engine or drive components.

WARNING

Fuel vapors trapped in the engine compartment may be an irritant, cause difficulty breathing, or may ignite resulting in a fire or explosion. Always ventilate the engine compartment before servicing the power package.

IMPORTANT: Refer to the maintenance schedule for the complete listing of all scheduled maintenance to be performed. A repair shop or person of the owner's choosing may maintain, replace, or repair emission control devices and systems. Certain other items should be performed only by an authorized Mercury MerCruiser dealer. Before attempting maintenance or repair procedures not covered in this manual, we recommend that you purchase a Mercury MerCruiser service manual and read it thoroughly.

NOTE: Maintenance points are color‑coded for ease of identification.

Maintenance Point Color Codes

Yellow Engine oil

Black Drive lube

Brown Power steering fluid

Blue Drain or flush

Do‑It‑Yourself Maintenance Suggestions

Present day marine equipment, such as your Mercury MerCruiser power package, are highly technical pieces of machinery. Electronic ignition and special fuel delivery systems provide greater fuel economies, but also are more complex for the untrained mechanic.

If you are one of those persons who likes to do it yourself, here are some suggestions for you.

90-8M0050539 eng MAY 2011 Page 73

Page 82

Section 5 - Maintenance

• Do not attempt any repairs unless you are aware of the Cautions, Warnings and procedures required. Your safety is our concern.

• If you attempt to service the product yourself, we suggest you order the service manual for that model. The service manual outlines the correct procedures to follow. It is written for the trained mechanic, so there may be procedures you don't understand. Do not attempt repairs if you do not understand the procedures.

• There are special tools and equipment that are required to perform some repairs. Do not attempt these repairs unless you have these special tools and/or equipment. You can cause damage to the product in excess of the cost a dealer would charge you.

• Also, if you partially disassemble an engine or drive assembly and are unable to repair it, the dealer's mechanic must reassemble the components and test to determine the problem. This will cost you more than taking it to the dealer immediately upon having a problem. It may be a very simple adjustment to correct the problem.

• Do not telephone the dealer, service office or the factory to attempt for them to diagnose a problem or to request the repair procedure. It is difficult for them to diagnose a problem over the telephone.

Your authorized dealer is there to service your power package. They have qualified factory trained mechanics. It is recommended you have the dealer do periodic maintenance checks on your power package. Have them winterize it in the

fall and service it before the boating season. This will reduce the possibility of any problems occurring during your boating season when you want trouble free boating pleasure.

Inspection

Inspect your power package often, and at regular intervals, to help maintain its top operating performance and correct potential problems before they occur. The entire power package should be checked carefully, including all accessible engine parts.

• Check for loose, damaged or missing parts, hoses and clamps; tighten or replace as necessary.

• Check plug leads and electrical leads for damage.

• Remove and inspect the propeller. If badly nicked, bent or cracked, contact your authorized Mercury MerCruiser dealer.

• Repair nicks and corrosion damage on power package exterior finish. Contact your authorized Mercury MerCruiser dealer.

Maintenance Schedules—350/377 MAG ECT and SeaCore 350/377 MAG ECT

Routine Maintenance

NOTE: Only perform maintenance that applies to your particular power package.

New Bravo sterndrive installations may require as much as 470 mL (16 fl oz)) of gear lube added to the monitor bottle during the break‑in period (20 hours of running time). It is important to monitor and maintain the gear lube level during the break‑in period. During the initial drive installation, air may be trapped in the top of the driveshaft housing. This void is filled from the gear lube monitor during the sterndrive break‑in period. As the air is purged from the sterndrive through the monitor bottle, the lube level in the bottle will drop.

Task Interval Maintenance to Be Performed

• Check the engine oil level. (You can extend this interval based on experience with the product.)

• Check the sterndrive gear lube level.

Each day start

Each day end

Weekly

• Check the trim pump oil level.

• Check the power‑assisted steering pump or the compact hydraulic steering fluid level, depending on the steering system of your model.

• If operating in saltwater, brackish water, or polluted water, flush the seawater section of the cooling system after each use.

• Check the water inlets for debris or marine growth.

• Check and clean the seawater strainer, if equipped.

• Check the coolant level.

• Inspect the sterndrive anodes and replace if eroded 50% or more.

Page 74 90-8M0050539 eng MAY 2011

Page 83

Task Interval Maintenance to Be Performed

• Remove the propeller and lubricate the propeller shaft and torque the nut. (If operating only in

freshwater, you can extend the interval to every four months.)

Every two months or 50

hours of operation

• If operating in saltwater, brackish water, or polluted water, apply Corrosion Guard to the power

package.

• Check the battery connections and the fluid level.

• Ensure that the gauges and the wiring connections are secure. Clean the gauges. (If operating

in saltwater, reduce this interval to every 25 hours or 30 days, whichever occurs first.)

Scheduled Maintenance

NOTE: Only perform maintenance which applies to your particular power package.

Task Interval Maintenance to Be Performed

After the initial 20‑hour

break‑in period

Every 50 hours or 2

months

(whichever occurs first)

Every 100 hours or

annually

(whichever occurs first)

Change the engine oil and filter.

All Bravo models: Lubricate the engine coupler (lubricate the engine coupler every 50 hours if operated at idle for prolonged periods of time).

• Touch‑up the paint on the power package.

• Change the engine oil and filter.

• Change the sterndrive gear lube.

• If the condition of the spark plugs, spark plug wires, and the distributor cap and rotor was

satisfactory at the initial inspection (as listed in Every 300 hours or 3 years), inspect the condition of these components. Replace as necessary.

• On models with closed cooling, check the coolant level and antifreeze concentration for

adequate freeze protection. Correct if necessary. Refer to the Specifications section.

• Tighten the connection of the gimbal ring to the steering shaft to specifications.

• Replace the water‑separating fuel filter.

• Check the steering system and the remote control for loose, missing, or damaged parts.

Lubricate the cables and the linkages.

• Check the continuity circuit for loose or damaged connections. Test the MerCathode unit output

if equipped.

• Clean the flame arrestor, IAC muffler, and the crankcase ventilation hoses. Inspect the PCV

valve, if equipped.

• Inspect the condition and the tension of the belts.

• Driveshaft extension models: Lubricate the driveshaft U‑joints, and tailstock input and output

bearings.

Section 5 - Maintenance

Every 150 hours or

annually

(whichever occurs first)

90-8M0050539 eng MAY 2011 Page 75

All Bravo models: Lubricate the engine coupler.

Page 84

Section 5 - Maintenance

Task Interval Maintenance to Be Performed

Every 300 hours or 3

years

• Check the engine mounts for tightness and torque if necessary.

• Check the electrical system for loose, damaged, or corroded fasteners.

• Inspect the condition of the spark plugs, spark plug wires, and the distributor cap and rotor, if equipped. Replace as necessary. If the condition of these components is satisfactory at inspection, repeat inspection every 100 hours or once a year, whichever occurs first.

• Check the cooling system and the exhaust system hose clamps for tightness. Inspect both systems for damage or leaks.

• Disassemble and inspect the seawater pump and replace worn components.

• On models with closed cooling, clean the seawater section of the closed cooling system. Clean, inspect, and test the pressure cap.

• Inspect the exhaust system components. If the package was equipped with water shutters (flapper valves), verify that they are not missing or worn.

• Check the engine alignment.

• Inspect the U‑joints, the splines, the bellows, and check the clamps.

• Lubricate the U‑joint splines and cross bearing, if equipped with a grease fitting.

• Inspect the gimbal bearing for roughness. Replace if necessary. See your certified Mercury MerCruiser dealer.

• Alpha models and Bravo models: Lubricate the engine coupler.

Every 5 years

• Replace the coolant/anitifreeze. Replace every two years if not using extended‑life coolant/ antifreeze.

Maintenance Schedules—350/377 MAG and SeaCore 350/377 MAG

Routine Maintenance

NOTE: Only perform maintenance that applies to your particular power package.

Task Interval Maintenance to Be Performed

• Check the engine oil level. (You can extend this interval based on experience with the product.)

• Check the sterndrive gear lube level.

Each day start

Each day end

Weekly

• Check the trim pump oil level.

• Check the power‑assisted steering pump or the compact hydraulic steering fluid level, depending on the steering system of your model.

• If operating in saltwater, brackish water, or polluted water, flush the seawater section of the cooling system after each use.

• Check the water inlets for debris or marine growth.

• Check and clean the seawater strainer, if equipped.

• Check the coolant level.

• Inspect the sterndrive anodes and replace if eroded 50% or more.

Page 76 90-8M0050539 eng MAY 2011

Page 85

Task Interval Maintenance to Be Performed

• Remove the propeller and lubricate the propeller shaft and torque the nut. (If operating only in

freshwater, you can extend the interval to every four months.)

Every two months or 50

hours of operation

• If operating in saltwater, brackish water, or polluted water, apply Corrosion Guard to the power

package.

• Check the battery connections and the fluid level.

• Ensure that the gauges and the wiring connections are secure. Clean the gauges. (If operating

in saltwater, reduce this interval to every 25 hours or 30 days, whichever occurs first.)

Scheduled Maintenance

NOTE: Only perform maintenance which applies to your particular power package.

Task Interval Maintenance to Be Performed

After the initial 20‑hour

break‑in period

Every 50 hours of

operation or 2 months

(whichever occurs first)

Every 100 hours of

operation or annually

(whichever occurs first)

Change the engine oil and filter.

All Bravo models except 496 : Lubricate the engine coupler (lubricate the engine coupler every 50 hours if operated at idle for prolonged periods of time).

• Touch‑up the paint on the power package.

• Change the engine oil and filter.

• Change the sterndrive gear lube.

• On models with closed cooling, check the coolant level and antifreeze concentration for

adequate freeze protection. Correct if necessary. Refer to the Specifications section.

• Tighten the connection of the gimbal ring to the steering shaft to specifications.

• Replace the water‑separating fuel filter.

• Check the steering system and the remote control for loose, missing, or damaged parts.

Lubricate the cables and the linkages.

• Check the continuity circuit for loose or damaged connections. Test the MerCathode unit output

if equipped.

• Clean the flame arrestor, IAC muffler, and the crankcase ventilation hoses. Inspect the PCV

valve, if equipped.

• Inspect the condition and the tension of the belts.

• Driveshaft extension models: lubricate the driveshaft U‑joints, and tailstock input and output

bearings.

Section 5 - Maintenance

Every 150 hours of

operation or annually

(whichever occurs first)

90-8M0050539 eng MAY 2011 Page 77

All Bravo models except 496: Lubricate the engine coupler.

Page 86

Section 5 - Maintenance

Task Interval Maintenance to Be Performed

Every 300 hours of

operation or 3 years

• Check the engine mounts for tightness and torque if necessary.

• Check the electrical system for loose, damaged, or corroded fasteners.

• Inspect the condition of the spark plugs, spark plug wires, and the distributor cap and rotor, if equipped. Replace as necessary.

• Check the cooling system and the exhaust system hose clamps for tightness. Inspect both systems for damage or leaks.

• Disassemble and inspect the seawater pump and replace worn components.

• On models with closed cooling, clean the seawater section of the closed cooling system. Clean, inspect, and test the pressure cap.

• Inspect the exhaust system components. If the package was equipped with water shutters (flapper valves), verify that they are not missing or worn.

• Check the engine alignment.

• Inspect the U‑joints, the splines, the bellows, and check the clamps.

• Lubricate the U‑joint splines and cross bearing, if equipped with a grease fitting.

• Inspect the gimbal bearing for roughness. Replace if necessary. See your certified Mercury MerCruiser dealer.

• Vazer models, Alpha models, and 496 MAG Bravo models only: Lubricate the engine coupler.

Every 5 years

• Replace the coolant. Replace every two years if not using extended‑life coolant.

Maintenance Log

Record all maintenance performed on your power package here. Be sure to save all work orders and receipts.

Date Maintenance Performed Engine Hours

Page 78 90-8M0050539 eng MAY 2011

Page 87

Section 5 - Maintenance

33200

33210

Engine Oil—350/377 MAG ECT and SeaCore 350/377 MAG ECT

Checking

NOTICE

Discharge of oil, coolant, or other engine/drive fluids into the environment is restricted by law. Use caution not to spill oil, coolant, or other fluids into the environment when using or servicing your boat. Be aware of the local restrictions governing the disposal or recycling of waste, and contain and dispose of fluids as required.

1. Stop the engine. Allow approximately five minutes for the oil to drain into the oil pan. The boat must be at rest in the water.

2. Remove the dipstick. Wipe clean and reinstall fully into the dipstick tube. Wait 60 seconds to allow trapped air to vent.

NOTE: Ensure that dipstick is installed with oil level indication marks facing the rear of the engine (flywheel end).

Dipstick

IMPORTANT: Add the specified engine oil to bring the level up to, but not over, the full or OK range mark on the dipstick.

3. Remove the dipstick and observe the oil level. Oil level must be between full or OK range and add. Reinstall dipstick into dipstick tube.

Filling

IMPORTANT: Do not overfill the engine with oil. IMPORTANT: Always use the dipstick to determine the exact quantity of oil or fluid required.

1. Remove oil fill cap.

Oil fill cap

2. Add the specified engine oil to bring the level up to, but not over, the full or OK range mark on the dipstick. Recheck oil level.

3. Replace the fill cap.

90-8M0050539 eng MAY 2011 Page 79

Page 88

Section 5 - Maintenance

33201

Engine Model Engine Oil Capacity Fluid type

All Models 4.25 L (4.50 US qt) Mercury MerCruiser Full‑Synthetic Engine Oil, 20W‑40

Changing Oil and Filter

Refer to the Maintenance schedule for the change interval. Engine oil should be changed before placing the boat in storage. IMPORTANT: Change engine oil when the engine is warm from operation. Warm oil flows more freely, carrying away more

impurities. Use only recommended engine oil (refer to Specifications).

Engine Oil Drain Pump

1. Loosen the oil filter to vent the system.

2. Remove the dipstick.

3. Install the oil pump onto the dipstick tube.

a - Typical oil pump b - Dipstick tube

mc70571-1

c - Oil drain hose

4. Insert the hose end of the crankcase oil pump onto an appropriate container and, using the handle, pump until the crankcase is empty.

5. Remove the pump.

6. Install the dipstick.

Changing Filter

1. Remove and discard oil filter.

Oil filter

2. Coat sealing ring on new filter with engine oil and install.

3. Tighten oil filter securely (following filter manufacturer's instructions). Do not overtighten.

4. Remove oil fill cap.

IMPORTANT: Always use dipstick to determine exactly how much oil is required.

5. Add recommended engine oil to bring level up to the bottom of the OK range on the dipstick.

6. With the boat at rest in the water, check the oil level and add specified fluid to bring the oil level up to, but not over, the full or OK range.

NOTE: Adding 0.95 L (1 qt) of engine oil will raise the level from the add mark to the top of the OK range.

7. Start the engine, run the engine for three minutes, and check for leaks. Stop the engine. Allow approximately five minutes for the oil to drain into the oil pan. The boat must be at rest in the water.

Page 80 90-8M0050539 eng MAY 2011

Page 89

Section 5 - Maintenance

Engine Oil—350/377 MAG and SeaCore 350/377 MAG

Checking

NOTICE

1. Stop the engine. Allow approximately five minutes for the oil to drain into the oil pan. The boat must be at rest in the water.

2. Remove the dipstick. Wipe clean and reinstall fully into the dipstick tube. Wait 60 seconds to allow trapped air to vent.

NOTE: Ensure that dipstick is installed with oil level indication marks facing the rear of the engine (flywheel end).

a - Dipstick tube

IMPORTANT: Add the specified engine oil to bring the level up to, but not over, the full or OK range mark on the dipstick.

3. Remove the dipstick and observe the oil level. Oil level must be between full or OK range and add. Reinstall dipstick into dipstick tube.

6095

Filling

IMPORTANT: Do not overfill the engine with oil. IMPORTANT: Always use the dipstick to determine the exact quantity of oil or fluid required.

1. Remove oil fill cap.

6065

IMPORTANT: Add the specified engine oil to bring the level up to, but not over, the full or OK range mark on the dipstick.

2. Add the specified engine oil to bring the level up to, but not over, the full or OK range mark on the dipstick. Recheck oil level.

3. Replace the fill cap.

Engine Model

350 MAG and SeaCore 350 MAG

377 MAG and SeaCore 377 MAG

90-8M0050539 eng MAY 2011 Page 81

Engine Oil Capacity Fluid type

4.25 L (4.5 US qt) Mercury MerCruiser Full‑Synthetic Engine Oil, 20W‑40

Page 90

Section 5 - Maintenance

Changing Oil and Filter

impurities. Use only recommended engine oil (refer to Specifications).

Engine Oil Drain Pump

1. Loosen the oil filter to vent the system.

2. Remove the dipstick.

3. Install the oil pump onto the dipstick tube.

a - Typical oil pump b - Dipstick tube

mc70571-1

4. Insert the hose end of the crankcase oil pump onto an appropriate container and, using the handle, pump until the crankcase is empty.

5. Remove the pump.

6. Install the dipstick.

c - Oil drain hose

Changing Filter

1. Remove and discard oil filter.

a - Oil filter

2. Coat sealing ring on new filter with engine oil and install.

3. Tighten oil filter securely (following filter manufacturer's instructions). Do not overtighten.

4. Remove oil fill cap.

IMPORTANT: Always use dipstick to determine exactly how much oil is required.

5. Add recommended engine oil to bring level up to the bottom of the OK range on the dipstick.

6. With the boat at rest in the water, check the oil level and add specified fluid to bring the oil level up to, but not over, the full or OK range.

NOTE: Adding 0.95 L (1 qt) of engine oil will raise the level from the add mark to the top of the OK range.

6068

Engine Model

350 MAG and SeaCore 350 MAG

377 MAG and SeaCore 377 MAG

Page 82 90-8M0050539 eng MAY 2011

Engine Oil Capacity Fluid type

4.25 L (4.5 US qt) Mercury MerCruiser Full‑Synthetic Engine Oil, 20W‑40

Page 91

Section 5 - Maintenance

33202

Power Steering Fluid

Power Steering Fluid—350/377 MAG ECT and SeaCore 350/377 MAG ECT

Checking

1. Stop the engine and center the sterndrive unit.

2. Remove the fill cap/dipstick and observe the level.

a. Proper fluid level with engine at normal operating temperature should be within the warm range. b. Proper fluid level with engine cold should be within the cold range.

a - Power steering pump b - Cold range c - Warm range

3. Fill to full line with specified fluid.

IMPORTANT: If fluid is not visible in pump, contact your authorized Mercury MerCruiser dealer.

Filling

1. Remove the fill cap/dipstick and observe the level.

2. Add Quicksilver Power Trim and Steering Fluid or Dexron III Automatic Transmission Fluid (ATF) to bring the fluid level up to the proper level.

Tube Ref No. Description Where Used Part No.

114

3. Reinstall the fill cap/dipstick.

Power Trim and Steering Fluid

Power steering system 92-858074K01

Changing

Power steering fluid does not require changing unless it becomes contaminated with water or debris. Contact your authorized Mercury MerCruiser dealer.

Power Steering Fluid—350/377 MAG and SeaCore 350/377 MAG

Checking

1. Stop the engine and center the sterndrive unit.

2. Remove the fill cap/dipstick and observe the level.

a. Proper fluid level with engine at normal operating temperature should be within the warm range.

90-8M0050539 eng MAY 2011 Page 83

Page 92

Section 5 - Maintenance

b. Proper fluid level with engine cold should be within the cold range.

a - Power steering pump b - Cold range c - Warm range

6100

3. Fill to full line with specified fluid. IMPORTANT: If fluid is not visible in pump, contact your authorized Mercury MerCruiser dealer.

Filling

1. Remove the fill cap/dipstick and observe the level.

2. Add Quicksilver Power Trim and Steering Fluid or Dexron III Automatic Transmission Fluid (ATF) to bring the fluid level up to the proper level.

Tube Ref No. Description Where Used Part No.

114

3. Reinstall the fill cap/dipstick.

Power Trim and Steering Fluid

Power steering system 92-858074K01

Changing

Power steering fluid does not require changing unless it becomes contaminated with water or debris. Contact your authorized Mercury MerCruiser dealer.

Engine Coolant—350/377 MAG ECT and SeaCore 350/377 MAG ECT

Checking

CAUTION

A sudden loss of pressure can cause hot coolant to boil and discharge violently resulting in serious injury from burns. Allow the engine to cool down before removing the coolant pressure cap.

Page 84 90-8M0050539 eng MAY 2011

Page 93

Section 5 - Maintenance

33172

1. Remove the cap from the heat exchanger and observe the fluid level.

Heat exchanger cap

2. The coolant level in the heat exchanger should be at the bottom of the filler neck. If the coolant level is low, contact your authorized Mercury MerCruiser dealer.

3. Install the cap onto the heat exchanger.

IMPORTANT: When reinstalling the pressure cap, be sure to tighten it until it seats on the filler neck.

4. With the engine at normal operating temperature, check the coolant level in the coolant recovery bottle.

5. The coolant level should be between the "ADD" and "FULL" marks.

6102

6. Add the specified fluid as necessary.

Tube Ref No. Description Where Used Part No.

122

Extended Life Antifreeze/ Coolant

Closed Cooling System 92-877770K1

Filling

NOTICE

Using propylene glycol antifreeze in the closed cooling system can damage the cooling system or the engine. Fill the closed cooling system with an ethylene glycol antifreeze solution suitable to the lowest temperature to which the engine will be exposed.

NOTICE

Without sufficient cooling water, the engine, the water pump, and other components will overheat and suffer damage. Provide a sufficient supply of water to the water inlets during operation.

90-8M0050539 eng MAY 2011 Page 85

Page 94

Section 5 - Maintenance

NOTICE

Air trapped in the closed cooling system can cause the engine to overheat, resulting in engine damage. Minimize the possibility of trapping air when initially filling the closed cooling system by positioning the boat so that the front of the engine is higher than the rear of the engine.

NOTE: Add coolant only when the engine is at normal operating temperature.

1. Remove the fill cap from the coolant recovery bottle. Inspect the gasket and replace if necessary. IMPORTANT: Coolant flows at a high rate of speed in this closed cooling system. Higher idle speeds can trap air in the system and make purge procedures more difficult. Operate at idle when filling the system or purging air.

2. Fill to the full mark with the specified coolant.

Tube Ref No. Description Where Used Part No.

122

3. Check the antifreeze concentration for adequate freeze protection and correct if necessary. Refer to the Specifications

section.

4. Install the fill cap to the coolant recovery bottle.

Extended Life Antifreeze/ Coolant

Closed cooling system 92-877770K1

Changing

Contact your authorized Mercury MerCruiser dealer.

Engine Coolant—350/377 MAG and SeaCore 350/377 MAG

Checking

CAUTION

A sudden loss of pressure can cause hot coolant to boil and discharge violently resulting in serious injury from burns. Allow the engine to cool down before removing the coolant pressure cap.

1. Remove the cap from the heat exchanger and observe the fluid level.

6101

2. The coolant level in the heat exchanger should be at the bottom of the filler neck. If the coolant level is low, contact your

authorized Mercury MerCruiser dealer.

3. Install the cap onto the heat exchanger. IMPORTANT: When reinstalling the pressure cap, be sure to tighten it until it seats on the filler neck.

4. With the engine at normal operating temperature, check the coolant level in the coolant recovery bottle.

a - Heat exchanger cap

Page 86 90-8M0050539 eng MAY 2011

Page 95

Section 5 - Maintenance

5. The coolant level should be between the "ADD" and "FULL" marks.

6102

6. Add the specified fluid as necessary.

Tube Ref No. Description Where Used Part No.

122

Extended Life Antifreeze/ Coolant

Closed Cooling System 92-877770K1

Filling

NOTICE

Without sufficient cooling water, the engine, the water pump, and other components will overheat and suffer damage. Provide a sufficient supply of water to the water inlets during operation.

NOTICE

NOTE: Add coolant only when engine is at normal operating temperature.

1. Remove the fill cap from the coolant recovery bottle.

2. Fill to the "FULL" line with the specified coolant.

Tube Ref No. Description Where Used Part No.

122

3. Install the fill cap onto the coolant recovery bottle.

Extended Life Antifreeze/ Coolant

Closed Cooling System 92-877770K1

Changing

Contact your authorized Mercury MerCruiser dealer.

Alpha Sterndrive Gear Lube

NOTICE

90-8M0050539 eng MAY 2011 Page 87

Page 96

Section 5 - Maintenance

43458

Checking

IMPORTANT: The gear lube level fluctuates during operation. Check before starting, when the engine is cold.

1. Check the gear lube level in the monitor bottle. Keep the gear lube level within the recommended operating range.

a - Seawater cooled models b - Closed cooled models

2. Inspect the gear lube condition. If any water is visible in the bottom of the gear lube monitor, if water appears at the fill and

drain plug hole, or if the gear lube appears discolored, these conditions can indicate a water leak in the sterndrive.

Filling

IMPORTANT: If more than 59 ml (2 fl. oz.) of gear lubricant is required to fill the monitor, a seal may be leaking. Damage to the sterndrive unit may occur due to lack of lubrication. Contact your authorized Mercury MerCruiser dealer.

1. Remove the gear lube monitor cap.

2. Fill the monitor with the specified fluid so that the gear lube level is in the operating range. Do not overfill.

a - "ADD" mark b - "OPERATING RANGE" mark

19948

Tube Ref No. Description Where Used Part No.

3. Ensure that the rubber gasket is inside the cap and install. Do not over tighten.

NOTE: When filling the entire sterndrive unit refer to

High Performance Gear Lubricant

Changing

Gear lube monitor 92-858064K01

Changing

1. Remove the gear lube monitor from the bracket.

2. Remove the gear lube monitor cap and empty the contents into a suitable container.

3. Install the gear lube monitor in the bracket.

Page 88 90-8M0050539 eng MAY 2011

Page 97

Section 5 - Maintenance

4. Place the sterndrive unit in full trim out position, remove the oil fill and drain screw and sealing washer and drain the oil.

a - Oil fill and drain screw b - Sealing washer

7160

5. Remove the oil vent screw and sealing washer. Allow the oil to drain completely.

a - Oil vent screw b - Sealing washer

7161

IMPORTANT: If any water drained from the oil fill/drain hole, or if the oil appears milky, the sterndrive unit is leaking and should be checked immediately by your authorized Mercury MerCruiser dealer.

6. Lower the sterndrive unit so that the propeller shaft is level. Fill the sterndrive unit through the oil fill and drain hole with the

specified gear lubricant until an air‑free stream of lubricant flows from oil vent hole.

Tube Ref No. Description Where Used Part No.

IMPORTANT: Use only Mercury/Quicksilver High Performance Gear Lubricant in sterndrive unit.

7. Install the oil vent screw and sealing washer.

8. Continue to pump gear lubricant into the drive through the oil fill and drain plug hole until gear lubricant appears in the gear

lube monitor.

9. Fill the monitor so that the gear lube level is in the operating range. Do not overfill. Ensure that the rubber gasket is inside the

cap and install. Do not over tighten.

High Performance Gear Lubricant

Sterndrive unit 92-858064K01

NOTE: Oil capacity includes the gear lube monitor.

Model

Alpha One 1892 ml (64 oz)

10. Remove the pump from the oil fill and drain hole. Quickly install the sealing washer and oil fill and drain screw. Tighten securely.

11. Recheck the oil level after the first use. IMPORTANT: The gear lube level fluctuates during operation. Check when the engine is cold.

Capacity Fluid Type

High Performance Gear

Lubricant

90-8M0050539 eng MAY 2011 Page 89

Page 98

Section 5 - Maintenance

43200

Sterndrive Gear Lube

Checking

NOTICE

NOTE: The oil level fluctuates during operation, so check with the engine cold before starting.

1. Check the gear lube oi level. Keep the oil level within the recommended operating range.

2. Inspect the lubricant condition. If any water is visible at the bottom of the gear lube monitor, if water appears at the fill and

drain plug hole, or if the gear lube appears discolored, contact your authorized Mercury MerCruiser dealer immediately. These conditions can indicate a water leak in the sterndrive.

Gear lube monitor

Filling

New installations may require as much as 470 mL (16 fl oz) of gear lube added to the monitor bottle during the break‑in period (20 hours of running time). It is important to monitor and maintain the gear lube level during the break‑in period.

IMPORTANT: The gear lube monitor must be checked and filled if necessary at the beginning of each day when the engine is cold. If the gear lube alarm sounds during the day's activity, add the appropriate amount of gear lube to the monitor bottle.

NOTE: If filling the entire sterndrive, see

1. Remove the gear lube monitor cap.

2. Fill the monitor with the specified fluid until the gear lube level is in the operating range. Do not overfill.

Tube Ref No. Description Where Used Part No.

3. Replace the cap.

High Performance Gear Lubricant

Changing

Gear lube monitor 92-858064K01

Changing

1. Remove the gear lube monitor from the bracket.

2. Empty the contents into a suitable container.

3. Install the gear lube monitor in the bracket.

4. Bravo One Models:

a. Remove the propeller. b. Position the sterndrive unit to the full down position. c. Remove the oil fill and drain screw and sealing washer.

Page 90 90-8M0050539 eng MAY 2011

Page 99

d. Drain the fluid into a suitable container.

mc79506-1

5. All Other Models:

a. Place the sterndrive unit in full trim out position. b. Remove the oil fill and drain screw and sealing washer. c. Drain the fluid into a suitable container.

Section 5 - Maintenance

a - Oil fill and drain screw b - Sealing washer

mc79507-1

6. Remove the oil vent screw and sealing washer. Allow the oil to drain completely.

a - Oil vent screw b - Sealing washer

mc77106-1

IMPORTANT: If any water drains from the unit, or if the fluid appears milky, the sterndrive unit is leaking. See your authorized Mercury MerCruiser dealer.

7. Lower the sterndrive unit so the propeller shaft is level.

IMPORTANT: Use only Mercury/Quicksilver High Performance Gear Lubricant in sterndrive unit.

8. Fill the sterndrive unit through the oil fill and drain hole with specified gear lubricant until an air‑free stream of lubricant flows

from oil vent hole.

Tube Ref No.

9. Install the oil vent screw and sealing washer.

Description Where Used Part No.

High Performance Gear Lubricant

Sterndrive unit 92-858064K01

90-8M0050539 eng MAY 2011 Page 91

Page 100

Section 5 - Maintenance

10. Continue to pump gear lubricant into the drive through the oil fill and drain hole until gear lubricant appears in the gear lube

monitor.

11. Fill the monitor so that the oil level is in the operating range. Do not overfill.

12. Ensure that the rubber gasket is inside the cap and install. Do not overtighten.

NOTE: Oil capacities include the gear lube monitor.

Model Capacity Fluid Type

Bravo One 2736 ml (92‑1/2 oz.)

Bravo Two 3209 ml (108‑1/2 oz.)

Bravo Three (Single seawater pickup) 2972 ml (100‑1/2 oz.)

Bravo Three (Dual seawater pickup) 2736 ml (92‑1/2 oz.)

13. Remove the pump from the oil fill and drain hole. Quickly install the sealing washer and screw. Tighten securely.

14. Reinstall the propeller. Refer to Propellers.

15. Check the oil level after the first use.

IMPORTANT: Oil level in the gear lube monitor rises and falls during operation. Always check the oil level when the sterndrive is cool and the engine is off.

High Performance Gear Lubricant

Power Trim Fluid

Checking

IMPORTANT: Check the oil level with the sterndrive unit in the full down/in position only.

1. Place the sterndrive unit in full down/in position.

2. Observe the oil level. Level must be between the "MIN" and "MAX" lines on the reservoir.

a - Reservoir b - "MIN" and "MAX" lines

3. Fill as necessary with the specified fluid.

Tube Ref No. Description Where Used Part No.

114

Power Trim and Steering Fluid

7876

Power trim pump 92-858074K01

Filling

1. Remove the fill cap from the reservoir.

NOTE: Fill cap is vented.

2. Add lubricant to bring level to the within the "MIN" and "MAX" lines on the reservoir.

Tube Ref No.

114

3. Install the cap.

Page 92 90-8M0050539 eng MAY 2011

Power Trim and Steering Fluid

Description Where Used Part No.

Power trim pump 92-858074K01

Mercury 350 MAG, SeaCore 350 MAG, 377 MAG, SeaCore 377 MAG User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Declaration of Conformity—Mercury MerCruiser

© 2011 Mercury Marine 350/377 MAG and SeaCore 350/377 MAG—All Models

Identification Record

Welcome

Warranty Message

Read This Manual Thoroughly

Notice

TABLE OF CONTENTS

Warranty Registration: United States and Canada

Warranty Registration: Outside the United States and Canada

Transfer of Warranty

Mercury Installation Quality Certification Program

Mercury Product Protection Plan: United States and Canada

Mercury MerCruiser Limited Warranty (Gasoline-Fueled Products Only)

3-YEAR LIMITED WARRANTY AGAINST CORROSION

4-YEAR LIMITED CORROSION WARRANTY: SEACORE STERNDRIVE MODELS WITH GAS ENGINES

Global Application Warranty Charts—350/377 MAG ECT and SeaCore 350/377 MAG ECT

Warranty for Consumer Applications

Warranty for Commercial Applications

Warranty for Government Applications

Global Application Warranty Charts—350/377 MAG and SeaCore 350/377 MAG

Warranty for Consumer Applications

Warranty for Commercial Applications

Warranty for Government Applications

Emission Control Warranty Information

Important Information

Emission Control Information Label

Owner Responsibility

California Emissions Limited Warranty—350/377 MAG ECT and SeaCore 350/377 MAG ECT

What Is Covered

Duration of Coverage

How to Obtain Warranty Coverage

What Mercury Will Do

What Is Not Covered

Disclaimers and Limitations

California Emission Control Warranty Statement—350/377 MAG ECT and SeCore 350/377 MAG ECT

Your Warranty Rights and Obligations

Manufacturer's Warranty Coverage

Owner's Warranty Responsibilities

U.S. EPA Emissions Limited Warranty

Emission Control System Components

Emission Certification Star Label

Hang Tag

Additional Operation Instructions for Axius Systems

Identification

Engine Serial Number Decal MPI

Alpha Sterndrive Decal Identification

Alpha Transom Serial Number

Bravo Sterndrive Serial Number and Identification

Bravo Transom Serial Number

Lanyard Stop Switch

Instrumentation—350/377 MAG and SeaCore 350/377 MAG

Digital Gauges

Analog Gauges

Instrumentation—350/377 MAG ECT and SeaCore 350/377 MAG ECT

VesselView

Digital Gauges

Analog Gauges

Remote Controls

Panel Mount Features

Console Mount Features

Remote Controls (DTS Models)

Remote Controls

Panel Mount Features

Synchronizing Dual Engines

Dual Helm Station Transfer

Synchronizing Dual Helms Prior To Station Transfer

Zero Effort Features

Dual Console Control with CAN Trackpad Features and Operation

Synchronizing Engines

Helm Transfer

Synchronizing Helms Prior to Transfer

Zero Effort Features

Power Trim

Single Engine Trim/Trailer

Dual Engine Trim/Trailer