Mercury 25 EFI FourStroke, 30 EFI FourStroke, 25 FourStroke User Manual

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Thank You

for your purchase of one of the finest outboards available. You have made a sound investment in boating pleasure. Your outboard has been manufactured by Mercury Marine, a world leader in marine technology and outboard manufacturing since 1939. These years of experience have been committed to the goal of producing the finest quality products. This led to Mercury Marine's reputation for strict quality control, excellence, durability, lasting performance, and being the best at providing after the sale support.

Please read this manual carefully before operating your outboard. This manual has been prepared to assist you in the operation, safe use, and care of your outboard.

All of us at Mercury Marine took pride in building your outboard and wish you many years of happy and safe boating.

Again, thank you for your confidence in Mercury Marine.

EPA Emissions Regulations

Outboards sold by Mercury Marine in the United States are certified to the United States Environmental Protection Agency as conforming to the requirements of the regulations for the control of air pollution from new outboard motors. This certification is contingent on certain adjustments being set to factory standards. For this reason, the factory procedure for servicing the product must be strictly followed and, wherever practicable, returned to the original intent of the design. Maintenance, replacement, or repair of the

emission control devices and systems may be performed by any marine engine repair establishment or individual.

Engines are labeled with an Emission Control Information decal as permanent evidence of EPA certification.

WARNING

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

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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 Information section 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.

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

Mercury Racing, Mercury Precision Parts, Mercury Propellers, Mariner, Quicksilver, #1 On The Water, Alpha, Bravo, Pro Max, OptiMax, Sport‑Jet, K‑Planes, MerCathode, RideGuide, SmartCraft, Zero Effort, 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.

Mercury Premier Service

Mercury evaluates the service performance of its dealers and assigns its highest rating of "Mercury Premier" to those demonstrating an exceptional commitment to service.

Earning a Mercury Premier Service rating means a dealer:

• Achieves a high 12 month service CSI (Customer Satisfaction Index) score for warranty service.

• Possesses all necessary service tools, test equipment, manuals, and parts books.

• Employs at least one Certified or Master technician.

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• Provides timely service for all Mercury Marine customers.

• Offers extended service hours and mobile service, when appropriate.

• Uses, displays, and stocks adequate inventory of genuine Mercury Precision Parts.

• Offers a clean, neat shop with well organized tools and service literature.

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

Name of engine manufacturer: Tohatsu Marine Corporation (TMC) Mercury Marine Joint Venture

Address: Shimodaira 4495‑9

Town: Komagane‑City,

Nagano

Post Code: 399‑4101 Country: Japan

Name of Authorized Representative: Brunswick Marine in EMEA Inc.

Address: Parc Industriel de Petit‑Rechain

Town: Verviers Post Code: B‑2800 Country: Belgium

Name of Notified Body for exhaust emission assessment: TUV SUD

Group

Address: Ridlerstrasse 65

Town: Munich

Post Code:

80339

Country:

Germany

ID Number: 0123

Name of Notified Body for noise emission assessment: International

Marine Certification Institute

Address: Rue Abbe Cuypers 3

Town:

Bruxelles

Post Code:

B‑1040

Country:

Belgium

ID Number: 0609

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Conformity assessment module used for exhaust emissions:

☒ B +C

☐ B +D

☐ B +E

☐ B +F

☐ G ☐ H

or engine type approved according to:

☐ Stage II of Directive 97/68/EC

☐ Directive 88/77/EC

Conformity assessment module used for noise emissions:

☐ A ☒ Aa ☐ G ☐ H

Other Community Directives applied: Safety of Machinery Directive 98/37/EC; Electromagnetic Compatibility Directive 2004/108/EC

Description of Engines and Essential Requirements

Engine Type

Fuel Type Combustion Cycle

☐ z or sterndrive without integral exhaust ☐ Diesel ☐ 2 stroke

☒ Outboard engine ☒ Petrol ☒ 4 stroke

Identification of Engines Covered by This Declaration of Conformity

Name of engine family

Unique engine identification number: starting serial number

EC Type‑examination certificate or type‑approval certificate number

15, 20 hp 0R335220 SB5 07 12 57840 027

25, 30 hp EFI 0R336045 SB5 05 10 57840 003

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Essential requirements

Standards

Other

normative

document/

method

Technical

file

Please specify in more detail (* = mandatory standard)

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 engines mentioned preceding complies with all applicable essential requirements in the way specified.

Name / function:

Mark D. Schwabero, President, Mercury Outboard

Date and place of issue:

July 24, 2008 Fond du Lac, Wisconsin, USA

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WARRANTY INFORMATION

Warranty Registration.................................................................. 1

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

FourStroke Outboard Limited Warranty....................................... 2

FourStroke Outboard Limited Warranty....................................... 6

FourStroke Outboard Limited Warranty..................................... 10

3 Year Limited Warranty Against Corrosion.............................. 14

Warranty Coverage and Exclusions.......................................... 17

GENERAL INFORMATION

Boater's Responsibilities............................................................ 20

Before Operating Your Outboard............................................... 20

Boat Horsepower Capacity........................................................ 21

High‑Speed and High‑Performance Boat Operation................. 21

Propeller Selection.....................................................................22

Outboard Remote Control Models ............................................ 25

Remote Steering Notice.............................................................25

Lanyard Stop Switch.................................................................. 26

Protecting People in the Water.................................................. 30

Passenger Safety Message ‑ Pontoon Boats and Deck Boats

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

Wave and Wake Jumping.......................................................... 32

Impact with Underwater Hazards...............................................33

Safety Instructions for Hand‑Tilled Outboards........................... 34

Exhaust Emissions.................................................................... 35

Selecting Accessories for Your Outboard.................................. 37

Safe Boating Suggestions......................................................... 38

Recording Serial Number.......................................................... 40

Specifications.............................................................................40

Component Identification........................................................... 42

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TRANSPORTING

Trailering Boat/Outboard .......................................................... 48

Transporting Your Outboard When Removed From Boat......... 48

Transporting Portable Fuel Tanks............................................. 49

FUEL and OIL

Fuel Recommendations............................................................. 51

Low Permeation Fuel Hose Requirement ................................. 53

Filling Fuel Tank........................................................................ 53

Engine Oil Recommendations................................................... 54

Checking And Adding Engine Oil...............................................54

FEATURES and CONTROLS

Remote Control Features.......................................................... 57

Tiller Handle Model Features.....................................................58

Warning System........................................................................ 62

Tiller Handle Models with Manual Gas Assist Tilt...................... 64

Tiller Handle Models with Manual Tilt........................................ 69

Power Trim and Tilt (if Equipped).............................................. 74

Trim Tab Adjustment................................................................. 79

OPERATION

Prestarting Check List................................................................81

Operating in Freezing Temperatures......................................... 81

Operating in Saltwater or Polluted Water.................................. 82

Pre‑Starting Instructions............................................................ 82

Engine Break‑in Procedure........................................................83

Starting the Engine ‑ Remote Control Models........................... 83

Starting the Engine ‑ Tiller Handle Models................................ 86

Gear Shifting ............................................................................. 89

Stopping the Engine ................................................................. 90

Emergency Starting................................................................... 90

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MAINTENANCE

Outboard Care........................................................................... 93

EPA Emissions.......................................................................... 94

Inspection and Maintenance Schedule...................................... 95

Flushing the Cooling System..................................................... 96

Top Cowl Removal and Installation........................................... 99

Exterior Care..............................................................................99

Battery Inspection ................................................................... 100

Fuel System............................................................................. 100

Steering Link Rod Fasteners................................................... 102

Corrosion Control Anode......................................................... 103

Propeller Replacement............................................................ 105

Spark Plug Inspection and Replacement.................................108

Fuse Replacement ‑ Electric Start Models.............................. 109

Timing Belt Inspection............................................................. 110

Lubrication Points.................................................................... 111

Checking Power Trim Fluid......................................................114

Changing Engine Oil ............................................................... 114

Gearcase Lubrication...............................................................116

Submerged Outboard.............................................................. 118

STORAGE

Storage Preparation.................................................................119

Protecting External Outboard Components............................. 120

Protecting Internal Engine Components.................................. 120

Gearcase................................................................................. 120

Positioning Outboard for Storage............................................ 120

Battery Storage........................................................................ 121

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TROUBLESHOOTING

Starter Motor Will Not Crank the Engine (Electric Start Models)

................................................................................................. 122

Engine Will Not Start................................................................122

Engine Runs Erratically........................................................... 123

Performance Loss....................................................................123

Battery Will Not Hold Charge................................................... 123

OWNER SERVICE ASSISTANCE

Local Repair Service................................................................125

Service Away from Home........................................................ 125

Parts and Accessories Inquiries.............................................. 125

Service Assistance.................................................................. 125

Mercury Marine Service Offices...............................................126

INSTALLATION

Installation Information.............................................................128

Installing Outboard...................................................................130

Electrical Harness, Battery Connection, Fuel Tanks............... 140

Control Cable Installation.........................................................145

Installing Propeller................................................................... 149

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Warranty Registration

UNITED STATES AND CANADA

To be eligible for warranty coverage, the product must be registered with Mercury Marine.

At the time of sale, the selling dealer should complete the warranty registration and immediately submit it to Mercury Marine via MercNET, e‑mail, or mail. Upon receipt of this warranty registration, Mercury Marine will record the registration.

A copy of the warranty registration should be provided to you by your selling dealer.

NOTE: Registration lists must be maintained by Mercury Marine and any dealer on marine products sold in the United States, should a safety recall notification under the Federal Safety Act be required.

You may change your address at any time, including at time of warranty claim, by calling Mercury Marine or sending a letter or fax with your name, old address, new address, and engine serial number to Mercury Marine’s warranty registration department. Your dealer can also process this change of information. Mercury Marine Attn: Warranty Registration Department W6250 W. Pioneer Road P.O. Box 1939 Fond du Lac, WI 54936-1939 920-929-5054 Fax +1 920 929 5893

OUTSIDE UNITED STATES AND CANADA

For products purchased outside the United States and Canada, contact the distributor in your country, or the Marine Power Service Center closest to you.

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Transfer of Warranty

UNITED STATES AND CANADA

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 and Canada, mail to:

Mercury Marine Attn: Warranty Registration Department W6250 W. Pioneer Road P.O. Box 1939 Fond du Lac, WI 54936-1939 920-929-5054 Fax +1 920 929 5893

Upon processing the transfer of warranty, Mercury Marine will record the new owner's information.

There is no charge for this service.

OUTSIDE THE UNITED STATES AND CANADA

For products purchased outside the United States and Canada, contact the distributor in your country, or the Marine Power Service Center closest to you.

FourStroke Outboard Limited Warranty

UNITED STATES AND CANADA

Outside the United States and Canada ‑ Check with your local distributor.

WHAT IS COVERED: Mercury Marine warrants its new products to be free of defects in material and workmanship during the period described below.

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DURATION OF COVERAGE: This Limited Warranty provides coverage for three (3) years from 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. Commercial users of these products receive warranty coverage of one (1) year from the date of first retail sale, or one (1) year from the date on which the product was first put into service, whichever occurs first. 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 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. 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. Warranty coverage may be terminated for used repossessed product; or product purchased at auction, from a salvage yard, or from an insurance company.

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 Mercury Marine specified predelivery inspection process 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 outlined in the Operation and Maintenance Manual must be timely performed in order to maintain warranty coverage. Mercury Marine reserves the right to make warranty coverage contingent upon proof of proper maintenance.

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WHAT MERCURY WILL DO: Mercury'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 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.

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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 the Operation and Maintenance Manual), operation of the product in a manner inconsistent with the recommended operation/duty cycle section of the Operation and Maintenance 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 not manufactured or sold by us, jet pump impellers and liners, operation with fuels, oils, or lubricants which are not suitable for use with the product (see the Operation and Maintenance 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, or running the boat with the engine trimmed out too far. Use of the product for racing or other competitive activity, or operating with a racing type lower unit, at any point, even by a prior 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 and/or replacement of boat partitions or material caused by boat design for 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, and if made, shall not be enforceable against Mercury Marine.

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For additional information regarding events and circumstances covered by this warranty, and those that are not, see the Warranty Coverage section of the Operation and Maintenance Manual, incorporated by reference into this warranty.

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.

FourStroke Outboard Limited Warranty

EUROPE AND CONFEDERATION OF INDEPENDENT STATES

Outside Europe and Confederation of Independent States ‑ check with local distributor.

WHAT IS COVERED: Mercury Marine warrants its new products to be free of defects in material and workmanship during the period described below.

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DURATION OF COVERAGE: This Limited Warranty provides coverage for two (2) years from 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. Commercial users of these products receive warranty coverage of one (1) year from the date of first retail sale, or one (1) year from the date in which the product was first put into service, whichever occurs first. 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 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. 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. Warranty coverage may be terminated for used or repossessed product; or product purchased at auction, from a salvage yard, or from an insurance company.

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 Mercury Marine specified predelivery inspection process is completed and documented. Warranty coverage becomes available upon proper registration of the product by the authorized dealer. Routine maintenance outlined in the Operation and Maintenance Manual must be timely performed in order to maintain warranty coverage. Mercury Marine reserves the right to make future warranty coverage contingent on proof of proper maintenance.

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WHAT MERCURY WILL DO: Mercury’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 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.

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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 the Operation and Maintenance Manual), operation of the product in a manner inconsistent with the recommended operation/duty cycle section of the Operation and Maintenance 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 not manufactured or sold by us, jet pump impellers and liners, operation with fuels, oils or lubricants which are not suitable for use with the product (see the Operation and Maintenance Manual), alteration or removal of parts, or 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, or running the boat with the engine trimmed out too far. Use of the product for racing or other competitive activity, or operating with a racing type lower unit, at any point, even by a prior 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 and/or replacement of boat partitions or material caused by boat design for 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, and if made, shall not be enforceable against Mercury Marine.

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DISCLAIMERS AND LIMITATIONS:

FourStroke Outboard Limited Warranty

MIDDLE-EAST AND AFRICA

WHAT IS COVERED: Mercury Marine warrants its new Outboard and Jet Products to be free of defects in material and workmanship during the period described below.

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DURATION OF COVERAGE: This Limited Warranty provides coverage for one (1) year from 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. Commercial users of these products receive warranty coverage of one (1) years from the date of first retail sale, or one (1) year from the date on which the product was first put into service, whichever occurs first. 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 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. 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.

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 Mercury Marine specified predelivery inspection process is completed and documented. Warranty coverage becomes available upon proper registration of the product by the authorized dealer. Routine maintenance outlined in the Operation and Maintenance Manual must be timely performed in order to maintain warranty coverage. Mercury Marine reserves the right to make warranty coverage contingent on proof of proper maintenance.

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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 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 the Operation and Maintenance Manual), operation of the product in a manner inconsistent with the recommended operation/duty cycle section of the Operation and Maintenance 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 not manufactured or sold by us, jet pump impellers and liners, operation with fuels, oils or lubricants which are not suitable for use with the product (see the Operation and Maintenance Manual), alteration or removal of parts, or 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 foreign body, running the engine out of water, mounting the engine too high on the transom, or running the boat with the engine trimmed out too far.

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Use of the product for racing or other competitive activity, or operating with a racing type lower unit, at any point, even by a prior owner of the product, voids the warranty.

DISCLAIMERS AND LIMITATIONS:

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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, Mercury 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: 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 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 subsequent (noncommercial use) purchaser upon proper reregistration of the product.

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 Mercury Marine specified predelivery 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 and Maintenance Manual must be in use on the boat, and routine maintenance outlined in the Operation and Maintenance 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.

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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 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.

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 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 the warranty period, even if the product is only occasionally used for such purposes.

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Corrosion damage caused by stray electrical currents (onshore power connections, nearby boats, submerged metal) is not covered by this corrosion warranty and should be protected against by the use of a corrosion protection system, such as the Mercury Precision Parts or Quicksilver MerCathode system and/or Galvanic Isolator. Corrosion damage caused by improper application of copper base antifouling paints is also not covered by this limited warranty. If antifouling protection is required, Tri‑Butyl‑Tin‑Adipate (TBTA) base antifouling paints are recommended on Outboard and MerCruiser boating applications. In areas where TBTA base paints are prohibited by law, copper base paints can be used on the hull and transom. Do not apply paint to the outboard or MerCruiser product. In addition, care must be taken to avoid an electrical interconnection between the warranted product and the paint. For MerCruiser product, an unpainted gap of at least 38 mm (1.5 in.) should be left around the transom assembly. Refer to the Operation and Maintenance Manual for additional details.

DISCLAIMERS AND LIMITATIONS:

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Warranty Coverage and Exclusions

The purpose of this section is to help eliminate some of the more common misunderstandings regarding warranty coverage. The following information explains some of the types of services that are not covered by warranty. The provisions set forth following have been incorporated by reference into the Three Year Limited Warranty Against Corrosion Failure, the International Limited Outboard Warranty, and the United States and Canada Limited Outboard Warranty.

Keep in mind that warranty covers repairs that are needed within the warranty period because of defects in material and workmanship. Installation errors, accidents, normal wear, and a variety of other causes that affect the product are not covered.

Warranty is limited to defects in material or workmanship, but only when the consumer sale is made in the country to which distribution is authorized by us.

Should you have any questions concerning warranty coverage, contact your authorized dealer. They will be pleased to answer any questions that you may have.

GENERAL EXCLUSIONS FROM WARRANTY

1. Minor adjustments and tune‑ups, including checking, cleaning, or adjusting spark plugs, ignition components, carburetor settings, filters, belts, controls, and checking lubrication made in connection with normal services.

2. Factory installed jet drive units ‑ Specific parts excluded from the warranty are: the jet drive impeller and jet drive liner damaged by impact or wear, and water damaged driveshaft bearings as a result of improper maintenance.

3. Damage caused by neglect, lack of maintenance, accident, abnormal operation, or improper installation or service.

4. Haul‑out, launch, towing charges, removal and/or replacement of boat partitions or material because of boat design for necessary access to the product, all related transportation charges and/or travel time, etc. Reasonable access must be provided to the product for warranty service. Customer must deliver product to an authorized dealer.

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5. Additional service work requested by customer other than that necessary to satisfy the warranty obligation.

6. Labor performed by other than an authorized dealer may be covered only under the following circumstances: when performed on emergency basis (providing there are no authorized dealers in the area who can perform the work required or have no facilities to haul‑out, etc., and prior factory approval has been given to have the work performed at this facility).

7. All incidental and/or consequential damages (storage charges, telephone or rental charges of any type, inconvenience or loss of time or income) are the owner's responsibility.

8. Use of other than Mercury Precision or Quicksilver parts when making warranty repairs.

9. Oils, lubricants, or fluids changed as a matter of normal maintenance is customer's responsibility unless loss or contamination of same is caused by product failure that would be eligible for warranty consideration.

10.Participating in or preparing for racing or other competitive activity or operating with a racing type lower unit.

11.Engine noise does not necessarily indicate a serious engine problem. If diagnosis indicates a serious internal engine condition which could result in a failure, condition responsible for noise should be corrected under the warranty.

12.Lower unit and/or propeller damage caused by striking a submerged object is considered a marine hazard.

13.Water entering engine through the fuel intake, air intake, or exhaust system or submersion.

14.Failure of any parts caused by lack of cooling water, which results from starting motor out of water, foreign material blocking inlet holes, motor being mounted too high, or trimmed too far out.

15.Use of fuels and lubricants which are not suitable for use with or on the product. Refer to the Maintenance section.

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16.Our limited warranty does not apply to any damage to our products caused by the installation or use of parts and accessories which are not manufactured or sold by us. Failures which are not related to the use of those parts or accessories are covered under warranty if they otherwise meet the terms of the limited warranty for that product.

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Boater's Responsibilities

The operator (driver) is responsible for the correct and safe operation of the boat and safety of its occupants and general public. It is strongly recommended that each operator (driver) read and understand this entire manual before operating the outboard.

Be sure at least one additional person onboard is instructed in the basics of starting and operating the outboard and boat handling in case the driver is unable to operate the boat.

Before Operating Your Outboard

Read this manual carefully. Learn how to operate your outboard properly. If you have any questions, contact your dealer.

Safety and operating information that is practiced, along with using good common sense, can help prevent personal injury and product damage.

This manual as well as safety labels posted on the outboard use the following safety alerts to draw your attention to special safety instructions that should be followed.

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.

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Boat Horsepower Capacity

WARNING

Exceeding the boat's maximum horsepower rating can cause serious injury or death. Overpowering the boat can affect boat control and flotation characteristics or break the transom. Do not install an engine that exceeds the boat's maximum power rating.

Do not overpower or overload your boat. Most boats will carry a required capacity plate indicating the maximum acceptable power and load as determined by the manufacturer following certain federal guidelines. If in doubt, contact your dealer or the boat manufacturer.

U.S. COAST GUARD CAP ACITY

MAXIMUM HORSEPOWER XXX

MAXIMUM PERSON CAPACITY (POUNDS) XXX

MAXIMUM WEIGHT CAPACITY XXX

26777

High‑Speed and High‑Performance Boat Operation

If your outboard is to be used on 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 familiarization demonstration ride with your dealer or an operator experienced with your boat/outboard combination. For additional information, obtain a copy of our Hi‑Performance Boat Operation booklet from your dealer, distributor, or Mercury Marine.

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Propeller Selection

The propeller on your outboard is one of the most important components in the propulsion system. An improper propeller choice can significantly affect the performance of your boat and could result in damage to the outboard engine.

When choosing a propeller, a full selection of aluminum and stainless steel propellers specifically designed for your outboard are available through Mercury Marine. To view the entire product offering and find the correct propeller that is best suited for your application, visit www.mercmarinepropellers.com or see your local authorized Mercury dealer.

SELECTING THE CORRECT PROPELLER

An accurate tachometer for measuring engine speed is important in choosing the correct propeller.

Choose a propeller for your boating application that will allow the engine to operate within the specified full throttle operating range. When operating the boat at full throttle under normal load conditions, the engine RPM should be in the upper half of the recommended full throttle RPM range. Refer to Specifications. If engine RPM is above that range, select a propeller of increased pitch in order to reduce engine RPM. If engine RPM is below the recommended range, select a propeller of reduced pitch to increase engine RPM.

IMPORTANT: To ensure proper fit, and performance, Mercury Marine recommends the use of Mercury or Quicksilver branded propellers and mounting hardware.

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Propellers are designated by the diameter, pitch, number of blades, and material. The diameter and pitch are stamped (cast) into the side or the end of the propeller hub. The first number represents the diameter of the propeller and the second number represents the pitch. For example, 14x19 represents a propeller with a 14 inch diameter and 19 inches of pitch.

a - Diameter b - Pitch ‑ Travel during one revolution

The following are some propeller basics that will help you determine the correct propeller for your boating application.

Diameter ‑ The diameter is the distance across the imaginary circle that is made when the propeller rotates. The correct diameter for each propeller has been predetermined for the design of your outboard. However, when more than one diameter is available for the same pitch, use a larger diameter for heavy boat applications and a smaller diameter for lighter applications.

Pitch ‑ The pitch is the theoretical distance, in inches, that a propeller travels forward during one revolution. Pitch can be thought of similar to gears in a car. The lower the gear, the faster the car will accelerate, but with lower overall top speed. Likewise, a lower pitch propeller will accelerate quickly, but top‑end speed will be reduced. The higher the propeller pitch the faster the boat will usually go; though typically slowing acceleration.

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Determining the Correct Pitch size ‑ First, check the full throttle RPM under normal load condition. If the full throttle RPM is within the recommended range, select a replacement or upgrade propeller with the same pitch as the current propeller.

• Adding 1 inch of pitch will reduce the full throttle RPM by 150 to 200

• Subtracting 1 inch of pitch will increase full throttle RPM by 150 to 200

• Upgrading from a 3‑blade propeller to a 4‑blade propeller will generally decrease full throttle RPM by 50 to 100

IMPORTANT: Avoid damage to the engine. Never use a propeller which allows the engine to exceed the recommended full throttle RPM range when under normal full throttle operation.

PROPELLER MATERIAL

Most propellers manufactured by Mercury Marine are made from either aluminum or stainless steel. Aluminum is suitable for general purpose use and is standard equipment on many new boats. Stainless steel is over five times more durable than aluminum and typically provides performance gains in acceleration and top end speed due to design efficiencies. Stainless steel propellers also come in a larger variety of sizes and styles that allow you to dial in the ultimate performance for your boat.

3 BLADE VS. 4 BLADE

Available in many sizes of both aluminum and stainless, 3 and 4‑blade propellers have unique performance characteristics. In general, 3‑blade propellers offer good all around performance and higher top speed than 4‑blade propellers. However, 4‑blade propellers are usually faster to plane and more efficient at cruising speeds, but lack the top end speed of a 3‑blade propeller.

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Outboard Remote Control Models

The remote control connected to your outboard must be equipped with a start in neutral only protection device. This prevents the engine from starting when the shift is actuated in any position other than neutral.

WARNING

Starting the engine with the drive in gear can cause serious injury or death. Never operate a boat that does not have a neutral‑safety‑protection device.

26779

Remote Steering Notice

The steering link rod that connects the steering cable to the engine must be fastened utilizing self‑locking nuts. These self‑locking nuts must never be replaced with common nuts (non‑locking) as they will work loose and vibrate off, freeing the link rod to disengage.

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WARNING

Improper fasteners or improper installation procedures can result in loosening or disengagement of the steering link rod. This can cause a sudden, unexpected loss of boat control, resulting in serious injury or death due to occupants being thrown within or out of the boat. Always use required components and follow instructions and torque procedures.

a - Self‑locking nuts

Lanyard Stop Switch

The purpose of a lanyard stop switch is to turn off the engine when the operator moves far enough away from the operator's position (as in accidental ejection from the operator's position) to activate the switch. Tiller handle outboards and some remote control units are equipped with a lanyard stop switch. A lanyard stop switch can be installed as an accessory ‑ generally on the dashboard or side adjacent to the operator's position.

9938

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The lanyard is a cord usually 122–152 cm (4–5 feet) 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.

a - Lanyard cord b - Lanyard stop switch

Read the following Safety Information before proceeding.

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Important Safety Information: The purpose of a lanyard stop switch is to stop the engine when the operator moves far enough away from the operator's position to activate the switch. This would occur if the operator accidentally falls overboard or moves within the boat a sufficient distance from the operator's position. Falling overboard and accidental ejections are more likely to occur in certain types of boats such as low sided inflatables, bass boats, high performance boats, and light, sensitive handling fishing boats operated by a hand tiller. Falling overboard and accidental ejections are also likely to occur as a result of poor operating practices such as sitting on the back of the seat or gunwale at planing speeds, standing at planing speeds, sitting on elevated fishing boat decks, operating at planing speeds in shallow or obstacle infested waters, releasing your grip on a steering wheel or tiller handle that is pulling in one direction, drinking alcohol or consuming drugs, or daring high speed boat maneuvers.

While activation of the lanyard stop switch will stop the engine immediately, a 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.

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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.

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 gearcase or propeller.

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

• Loss of control when docking.

KEEP THE LANYARD STOP SWITCH AND LANYARD CORD IN GOOD OPERATING CONDITION

Before each use, check to ensure the lanyard stop switch works properly. Start the engine and stop it by pulling the lanyard cord. If the engine does not stop, have the switch repaired before operating the boat.

Before each use, visually inspect the lanyard cord to ensure it is in good working condition and that there are no breaks, cuts, or wear to the cord. Check that the clips on the ends of the cord are in good condition. Replace any damaged or worn lanyard cords.

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Protecting People in the Water

WHILE YOU ARE CRUISING

It is very difficult for a person standing or floating in the water to take quick action to avoid a boat heading in his/her direction, even at slow speed.

21604

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 (coasting) and the outboard gear shift is in neutral position, 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 outboard into neutral and shut off the engine before allowing people to swim or be in the water near your boat.

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Passenger Safety Message ‑ 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 the boat. Falling over the front of the boat between the two pontoons will position them to be run over by the outboard.

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.

26782

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.

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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.

26783

Wave and Wake Jumping

Operating recreational boats over waves and wake is a natural part of boating. However, when this activity is done with sufficient speed to force the boat hull partially or completely out of the water, certain hazards arise, particularly when the boat reenters the water.

26784

The primary concern is the boat changing direction while in the midst of the jump. In such case, the landing may cause the boat to veer violently in a new direction. Such a sharp change in direction can cause occupants to be thrown out of their seats, or out of the boat.

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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.

There is another less common hazardous result from allowing your boat to launch off 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 to a nearly instantaneous stop and can send the occupants flying forward. The boat may also steer sharply to one side.

Impact with Underwater Hazards

Reduce speed and proceed with caution whenever you drive a boat in shallow water areas, or in areas where you suspect underwater obstacles may exist which could be struck by the outboard or the boat bottom. The most important thing you can do to help reduce injury or impact damage from striking a floating or underwater object is to control the boat speed. Under these conditions, boat speed should be kept to a minimum planing speed of 24 to 40 km/h (15 to 25 MPH).

26785

Striking a floating or underwater object could result in an infinite number of situations. Some of these situations could result in the following:

• Part of the outboard or the entire outboard could break loose and fly into the boat.

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• The boat could move suddenly in a new direction. Such a sharp change in direction 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, or even out of the boat.

• Impact damage to the outboard and/or boat.

Keep in mind, the most important thing you can do to help reduce injury or impact damage during an impact 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 it for any broken or loose parts. If damage is present or suspected, the outboard should be taken to an authorized dealer for a thorough inspection and necessary repair.

The boat should also be checked for any hull fractures, transom fractures, or water leaks.

Operating a damaged outboard could cause additional damage to other parts of the outboard, or could affect control of the boat. If continued running 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.

Safety Instructions for Hand‑Tilled Outboards

No person or cargo should occupy the area directly in front of the outboard while the boat is in motion. If an underwater obstacle is struck, the outboard will tilt up and could seriously injure anyone occupying this area.

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MODELS WITH CLAMP SCREWS:

Some outboards come with transom bracket clamp screws. The use of clamp bracket screws alone, is insufficient to properly and safely secure the outboard to the transom. Proper installation of the outboard includes bolting the engine to the boat through the transom. Refer to Installation ‑ Installing Outboard for more complete installation information.

WARNING

Failure to correctly fasten the outboard could result in the outboard propelling off the boat transom resulting in property damage, serious injury, or death. Before operation, the outboard must be correctly installed with the required mounting hardware. Do not accelerate above idle speed in water that may contain underwater obstacles if the outboard is not attached to the transom correctly.

If an obstacle is struck at planing speed and the outboard is not securely fastened to the transom, it is possible the outboard could lift off the transom and land in the boat.

Exhaust Emissions

BE ALERT TO CARBON MONOXIDE POISONING

Carbon monoxide is present in the exhaust fumes of all internal combustion engines. This includes the outboards, sterndrives, and inboard engines that propel boats, as well as the generators that power various boat accessories. Carbon monoxide is a deadly gas that is odorless, colorless, and tasteless.

Early symptoms of carbon monoxide poisoning which should not be confused with seasickness or intoxication, include headache, dizziness, drowsiness, and nausea.

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WARNING

Carbon monoxide poisoning can lead to unconsciousness, brain damage, or death. Keep the boat well ventilated while at rest or underway and avoid prolonged exposure to carbon monoxide.

GOOD VENTILATION

Ventilate passenger area, open side curtains or forward hatches to remove fumes.

21622

Example of desired air flow through the boat

POOR VENTILATION

Under certain running and/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 enclosed area of a stationary boat that contains or is near a running engine may be exposed to a hazardous level of carbon monoxide.

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WHILE BOAT IS STATIONARY

a - Running the engine when the boat is moored in a confined

space

b - Mooring close to another boat that has its engine running

WHILE BOAT IS MOVING

a - Running the boat with the trim angle of the bow too high b - Running the boat with no forward hatches open

Selecting Accessories for Your Outboard

Genuine Mercury Precision or Quicksilver Accessories have been specifically designed and tested for your outboard. These accessories are available from Mercury Marine dealers.

IMPORTANT: Check with your dealer before installing accessories. The misuse of approved accessories or the use of nonapproved accessories can damage the product.

Some accessories not manufactured or sold by Mercury Marine are not designed to be safely used with your outboard or outboard operating system. Acquire and read the installation, operation and maintenance manuals for all your selected accessories.

21626

21628

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Safe Boating Suggestions

In order to safely enjoy the waterways, familiarize yourself with local and other governmental boating regulations and restrictions, and consider the following suggestions.

Use flotation devices. Have an approved personal flotation device of suitable size for each person aboard (it is the law) and have it readily accessible.

Do not overload your boat. Most boats are rated and certified for maximum load (weight) capacities (refer to your boat capacity plate). If in doubt, contact your dealer or the boat's manufacturer.

Perform safety checks and required maintenance. Follow a regular schedule and ensure that all repairs are properly made.

Know and obey all nautical rules and laws of the waterways. Boat operators should complete a boating safety course. Courses are offered in the U.S.A. by 1) the U.S. Coast Guard Auxiliary, 2) the Power Squadron, 3) the Red Cross, and 4) your state boating law enforcement agency. Inquiries may be made to the Boating Hotline, 1‑800‑368‑5647 or the Boat U.S. Foundation information number 1‑800‑336‑BOAT.

Make sure 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 back of seats, gunwales, transom, bow, decks, raised fishing seats, any rotating fishing seat; or anywhere that an 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.

Never be under the influence of alcohol or drugs while boating (it is the law). Alcohol or drug use impairs your judgment and greatly reduces your ability to react quickly.

Prepare other boat operators. Instruct at least one other person onboard in the basics of starting and operating the outboard, and boat handling, in case the driver becomes disabled or falls overboard.

Passenger boarding. Stop the engine whenever passengers are boarding, unloading, or are near the back (stern) of the boat. Just shifting the outboard into neutral is not sufficient.

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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 operator's view when operating the boat above idle speed.

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 61 m (200 ft) in front of you in 5 seconds.

Watch fallen skiers. When using your boat for waterskiing or similar activities, always keep a fallen or down skier on the operator's side of the boat while returning to assist 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.

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Recording Serial Number

It is important to record this number for future reference. The serial number is located on the outboard as shown.

a - Serial number b - Model designation c - Year manufactured d - Certified Europe Insignia (as applicable)

Specifications

Models

25 30

Power 18.4 kw (25 hp) 22.1 kw (30 hp)

Full throttle RPM range 5000–6000 RPM 5250–6250 RPM

Idle speed in forward gear 850 ± 25 RPM

Number of cylinders 3

Piston displacement 526 cc (32.09 cid)

Cylinder bore 61.0 mm (2.40 in.)

Stroke 60 mm (2.36 in.)

Valve clearance (cold)

Intake valve 0.13–0.17 mm (0.005–0.007 in.)

Exhaust valve 0.18–0.22 mm (0.007–0.008 in.)

Recommended spark plug NGK DCPR6E

Spark plug gap 0.8–0.9 mm (0.031–0.035 in.)

Gear ratio 1.92:1

Recommended gasoline Refer to Fuel and Oil

XXXXXXXX

XXXX

39255

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Models 25 30

Recommended oil Refer to Fuel and Oil

Gearcase lubricant capacity 350 ml (11.8 fl oz)

Engine oil capacity 1.8 liter (1.9 US qt)

Battery rating

465 marine cranking amps (MCA) or 350

cold cranking amps (CCA)

Emission control system Electronic engine control (EC)

Sound at drivers ear (ICOMIA 39‑94) dBA

80.9

Tiller handle vibration (ICOMIA 38‑94) m/s²

5.3

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Component Identification

MANUAL TILT MODEL

a - Top cowl b - Manual start handle c - Engine stop switch d - Throttle friction adjustment knob e - Throttle only button f - Transom brackets g - Tilt lock lever h - Primary cooling water intake i - Gearcase j - Secondary cooling water intake k - Anti‑ventilation plate

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l - Oil drain screw m -Water pump indicator hole n - Bottom cowl o - Cowl latch p - Warning light q - Starting button (electric start models) r - Lanyard stop switch s - Steering friction adjustment lever

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MANUAL GAS ASSIST TILT MODEL

a - Top cowl b - Manual start handle c - Engine stop switch d - Throttle friction adjustment knob e - Throttle only button f - Tilt support lever g - Gas assist tilt lever h - Primary cooling water intake i - Gearcase j - Secondary cooling water intake k - Anti‑ventilation plate l - Chaps

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GENERAL INFORMATION

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m -Water pump indicator hole n - Cowl latch o - Warning light p - Starting button (electric start models) q - Lanyard stop switch r - Steering friction adjustment lever

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POWER TRIM MODEL

a - Transom brackets b - Tilt support lever c - Top cowl d - Cowl latch e - Bottom cowl f - Auxiliary tilt switch g - Chaps h - Anti‑ventilation plate i - Secondary cooling water intake j - Gearcase k - Primary cooling water intake

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l - Manual tilt release valve

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TRANSPORTING

48 eng

Trailering Boat/Outboard

Trailer your boat with the outboard tilted down in a vertical operating position. Shift the engine into reverse.

If additional ground clearance is required, the outboard should be tilted up using an accessory outboard support device. Refer to your local dealer for recommendations. Additional clearance may be required for railroad crossings, driveways and trailer bouncing.

10218

IMPORTANT: Do not rely on the power trim/tilt system or tilt support lever to maintain proper ground clearance for trailering. The outboard tilt support lever is not intended to support the outboard for trailering.

Shift the outboard to reverse gear. This prevents the propeller from spinning freely.

Transporting Your Outboard When Removed From Boat

IMPORTANT: Ensure the proper procedures are followed for transportation and storage of the outboard to avoid the possibility of oil leaks.

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TRANSPORTING

eng 49

1. To prevent problems which can be caused by oil entering the cylinders from the sump, transport and store the outboard only in one of the two positions shown.

a - Upright b - Tiller handle side

down

Transporting Portable Fuel Tanks

WARNING

Avoid serious injury or death from a gasoline fire or explosion. Follow the transporting instructions supplied with the portable fuel tank. Transport the fuel tank in a well ventilated area away from open flame or sparks.

MANUAL VENTING TYPE FUEL TANK

Close fuel tank air vent when transporting tank. This will prevent escape of fuel or vapors from tank.

26793

AUTO-VENTING TYPE FUEL TANK

1. Disconnect the remote fuel line from tank. This will close the air vent and prevent escape of fuel or vapors from tank.

aba

15930

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TRANSPORTING

50 eng

2. Install tether cap over the fuel line connector stem. This will protect the connector stem from being accidentally pushed‑in, allowing fuel or vapor to escape.

a - Connector stem b - Tether cap

26794

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FUEL AND OIL

eng 51

Fuel Recommendations

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 damage caused thereby will not be covered under the limited warranty.

FUEL RATINGS

Mercury Marine 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.

Outside USA and Canada ‑ having 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) GASOLINES (USA ONLY)

This type of gasoline is required in certain areas of the USA. The 2 types of oxygenates used in these fuels are 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 Marine 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 from the gasoline in the fuel tank.

Page 62

FUEL AND OIL

52 eng

The fuel system components on your Mercury Marine 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 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.

Because of possible adverse effects of alcohol in gasoline, it is recommended that only alcohol‑free gasoline be used where possible. If only fuel containing alcohol is available, or if the presence of alcohol is unknown, increased inspection frequency for leaks and abnormalities is required.

IMPORTANT: When operating a Mercury Marine 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.

Page 63

FUEL AND OIL

eng 53

Low Permeation Fuel Hose Requirement

Required for outboards manufactured for sale, sold, or offered for sale in the United States.

• The Environmental Protection Agency (EPA) requires that any outboard manufactured after January 1, 2009 must use low permeation fuel hose for the primary fuel hose connecting the fuel tank to the outboard.

• Low permeation hose is USCG Type B1‑15 or Type A1‑15, defined as not exceeding 15/gm²/24 h with CE 10 fuel at 23 °C as specified in SAE J 1527 ‑ marine fuel hose.

Filling Fuel Tank

WARNING

Avoid serious injury or death from a gasoline fire or explosion. Use caution when filling fuel tanks. Always stop the engine and do not smoke or allow open flames or sparks in the area while filling fuel tanks.

Fill fuel tanks outdoors away from heat, sparks, and open flames.

Remove portable fuel tanks from boat to refill them. Always stop engine before refilling tanks. Do not completely fill the fuel tanks. Leave approximately 10% of

the tank volume unfilled. Fuel will expand in volume as its temperature rises and can leak under pressure if the tank is completely filled.

PORTABLE FUEL TANK PLACEMENT IN THE BOAT

Place the fuel tank in the boat so the vent is higher than the fuel level under normal boat operating conditions.

Page 64

FUEL AND OIL

54 eng

Engine Oil Recommendations

We recommend the use of Mercury or Quicksilver NMMA FC‑W certified 10W‑30 4‑Stroke Outboard Oil for general, all‑temperature use. If NMMA certified synthetic blend 25W‑40 4‑Stroke outboard oil is preferred, use Mercury or Quicksilver synthetic blend 4‑Stroke Outboard Oil. If the recommended Mercury or Quicksilver NMMA FC‑W certified outboard oils are not available, a major FC‑W certified 4‑stroke outboard oil may be used.

IMPORTANT: The use of detergent oils, multi‑viscosity oils (other than Mercury or Quicksilver NMMA FC‑W certified oil or a major brand NMMA FC‑W certified oil), synthetic oils, low quality or oils that contain solid additives are not recommended.

Recommended SAE viscosity for engine oil

a - NMMA FC‑W certified

25W‑40 4‑stroke outboard oil may be used at temperatures above 4 °C (40 °F)

b - NMMA FC‑W certified

10W‑30 4‑stroke outboard oil is recommended for use in all temperatures.

Checking And Adding Engine Oil

IMPORTANT: Do not overfill. Be sure that the outboard is upright (not tilted) when checking oil.

1. Turn the engine off. Have the outboard in a level operating position. Remove the top cowl.

+20

+40

+60

+80

F° C°

+100

–7

+16

+27

–18

+38

26795

Page 65

FUEL AND OIL

eng 55

2. Pull out the dipstick. Wipe it with a clean rag or towel and push it back in all the way.

a - Full mark b - Add mark c - Dipstick d - Oil fill cap

3. Pull the dipstick back out again and observe the oil level. Oil must be between full mark and add mark. If the oil level is low, remove the oil fill cap and fill to (but not over) the upper oil level.

NOTE: Under certain conditions, the operating temperature of 4‑stroke outboard engines may not get hot enough to evaporate the normal fuel and moisture that accumulate in the crankcase. These conditions include operating at idle for long periods, repeated short trips, slow speed or quick stop‑and‑go operation, and operating in cooler climates. This additional fuel and moisture that collects in the crankcase eventually ends up in the oil sump and will add to the total volume of oil that appears on the dipstick reading. This increase in oil volume is known as oil dilution. Outboard engines can typically handle large amounts of oil dilution without causing durability problems. However, to ensure extended life of the outboard engine, Mercury recommends that the oil and filter be changed regularly following the oil change interval and using the recommended oil quality. It is further recommended that if your outboard is operated frequently in the conditions described above, that more frequent oil change intervals be considered.

9596

Page 66

FUEL AND OIL

56 eng

4. Push the dipstick back in all the way. Reinstall the oil fill cap hand tight.

Page 67

FEATURES AND CONTROLS

eng 57

Remote Control Features

Your boat may be equipped with one of the Mercury Precision or Quicksilver remote controls shown. If not, consult your dealer for a description of the functions and operations of the remote control.

a - Control handle ‑ forward, neutral, reverse b - Neutral release lever c - Trim/tilt switch (if equipped) ‑ Refer to Features and

Controls ‑ Power Trim and Tilt

d - Lanyard stop switch ‑ Refer to General Information ‑

Lanyard Stop Switch

e - Lanyard ‑ Refer to General Information ‑ Lanyard Stop

Switch

f - Throttle friction adjustment ‑ Console controls require

cover removal for adjustment

g - Ignition key switch ‑ "OFF," "ON," START" h - Fast idle lever ‑ Refer to Operation ‑ Starting the Engine i - Throttle only button ‑ Refer to Operation ‑ Starting the

Engine

26800

Page 68

FEATURES AND CONTROLS

58 eng

Tiller Handle Model Features

• Throttle only button ‑ Pressing in the button while the outboard is in neutral allows the boat operator to increase engine RPM for warm‑up, without shifting the engine into gear.

15894

• Steering friction adjustment ‑ Adjust this lever to achieve the desired steering friction (drag) on the tiller handle. Move lever to the left to tighten friction or move to the right to loosen friction.

WARNING

Insufficient friction adjustment can cause serious injury or death due to loss of boat control. When setting the friction adjustment, maintain sufficient steering friction to prevent the outboard from steering into a full turn if the tiller handle or steering wheel is released.

a - Tighten friction b - Loosen friction

9988

Page 69

FEATURES AND CONTROLS

eng 59

• Warning light ‑ The warning light will turn on or flash to alert the operator to the warning system situations. Refer to Warning System.

15732

• Electric start button (electric start models) ‑ Press to start the engine.

15898

Page 70

FEATURES AND CONTROLS

60 eng

• Tiller handle ‑ Handle can be tilted 180° for convenient handling during transportation and storage.

28535

• Tiller lock release lever ‑ Push lever to move tiller handle from one position to another.

a - Tiller lock release

lever

3274

Page 71

FEATURES AND CONTROLS

eng 61

• Tiller handle lock cap ‑ Remove the lock cap on top of tiller handle to lock in up position. Push tiller lock release lever to release the handle from the locked up position.

a - Lock cap b - Locking mechanism

• Engine stop switch

28537

• Throttle grip friction knob ‑ Turn friction knob to set and maintain the throttle at desired speed. Turn the knob clockwise to tighten the friction or turn the knob counterclockwise to loosen the friction.

a - Loosen friction

(counterclockwise)

b - Tighten friction (clockwise)

3273

28542

Page 72

FEATURES AND CONTROLS

62 eng

•

Lanyard stop switch ‑ Refer to General Information ‑ Lanyard Stop Switch.

19791

Warning System

WARNING HORN

Remote control models will have the warning horn located inside the remote control or connected to the ignition key switch. Tiller handle models will have the warning horn located in the engine cowl.

WARNING LIGHT

The warning light will turn on or flash to alert the operator to the warning system situations listed the the following chart.

15732

WARNING SYSTEM OPERATION

The warning horn will emit either a continuous beep or intermittent short beeps and engine speed will be limited. This will alert the operator and help identify the following listed situations.

Page 73

FEATURES AND CONTROLS

eng 63

Warning System

Function Sound

Warning

Light

Description

Engine

Speed

Limited to

2800 RPM

Start up One beep

On for 5

seconds

Normal system test

Engine over temperature

Continuous On Engine overheat X

Low oil pressure Continuous On Low oil pressure X

Engine overspeed

Continuous On

Engine speed exceeds maximum allowable RPM

Water temp or MAP sensor out of range

Intermittent short beep

Flashes

Engine speed will be limited. Consult your dealer for assistance.

ENGINE OVERHEAT

If the engine overheats, immediately reduce throttle speed to idle. Shift outboard into neutral and check for a steady stream of water coming out of the water pump indicator hole.

9647

If no water is coming out of the water pump indicator hole, or flow is intermittent, stop engine and check cooling water intake holes for obstruction. If no obstruction is found, this may indicate a blockage in the cooling system or a water pump problem. Have the outboard checked by your dealer. Operating the engine while overheated will cause engine damage.

Page 74

FEATURES AND CONTROLS

64 eng

If a steady flow of water is coming out of the water pump indicator hole and the engine continues to overheat, consult your dealer. Operating an overheated engine will cause engine damage.

NOTE: Should overheating occur and you are stranded, stop the engine and allow it to cool down. This will usually allow some additional low speed (idle) running time before the engine starts to overheat again.

LOW OIL PRESSURE

The warning system will be activated if the oil pressure drops too low. First, stop the engine and check the oil level. Add oil if necessary. If the oil is at the recommended level and the warning horn continues to sound, consult your dealer. Engine speed will be limited to 2800 RPM, however, you should not continue to run engine.

ENGINE OVERSPEED LIMITER

Some causes of engine overspeed are as follows:

• Propeller ventilation

• A propeller which has an incorrect pitch or diameter

• Propeller hub slippage

• Outboard mounted too high on the transom

• Tilting the outboard out beyond a vertical position

• Cavitation of the propeller due to rough water or obstruction in the boat hull

When the engine overspeed limiter is activated, the engine timing will be momentarily retarded to decrease the engine speed. Excessive overspeed (above 6300 RPM) will result in cutout of the cylinders to prevent operation above this limit.

Tiller Handle Models with Manual Gas Assist Tilt

Models equipped with a gas assisted tilt system allows the operator to lock the outboard at any tilt position from full down to full up.

This tilt system is designed to be adjusted when the outboard is idling in neutral or with the engine turned off.

Page 75

FEATURES AND CONTROLS

eng 65

Before operating, the outboard must be locked in its tilt position by moving the lock lever to the lock position.

WARNING

Operating the engine without engaging the tilt lock lever can cause serious injury or death. The outboard can tilt upwards when decelerating or operating in reverse, causing loss of boat control. Always lock the outboard in its run position before operating.

BASIC TILTING OPERATION

Move lock lever to the free position. Tilt outboard to desired position and lock in place by moving the tilt lock lever back to the lock position.

a - Free position b - Lock position

LOCK

FREE

10257

Page 76

FEATURES AND CONTROLS

66 eng

SHALLOW WATER OPERATION

When operating your boat in shallow water, the outboard can be adjusted and locked at a higher tilt angle. Operate your outboard at slow speed while tilted up for shallow water operation. Keep the cooling water intake holes submerged in the water and continue to check for water discharge from the water pump indicator hole.

10258

TILTING OUTBOARD TO FULL UP POSITION

1. Stop the engine. Move the lock lever to the free position. Take hold of the top cowl grip and raise outboard to full tilt up position. Lock the outboard in place by moving the lock lever to the lock position.

10284

2. Engage the tilt support lever.

3. Lower outboard to rest on the tilt support lever.

LOWERING OUTBOARD TO RUN POSITION

1. Move lock lever to the free position. Tilt up the outboard slightly and release the tilt support lever. Lower outboard to run position.

Page 77

FEATURES AND CONTROLS

eng 67

2. Move lock lever to the lock position.

9703

OPERATING ANGLE ADJUSTMENT

The transom brackets have four holes for adjusting the vertical operating angle (forward stop movement) of the outboard. Use the tilt pin for adjustments in the four holes.

a - Transom bracket holes b - Tilt pin

Adjust the operating angle of the outboard so that the outboard runs perpendicular to the water when the boat is at full speed.

LOCK

FREE

10290

Page 78

FEATURES AND CONTROLS

68 eng

Arrange passengers and load in the boat so the weight is distributed evenly.

a - Too much angle (bow up) ‑ adjust in b - Not enough angle (bow down) ‑ adjust out c - Angle adjusted properly (bow slightly up)

NOTE: The outboard should be locked against the tilt pin during operation by setting the tilt lock lever to the lock position.

Consider the following lists carefully when adjusting the operating angle of your outboard.

Adjusting the outboard close to the boat transom can:

• Lower the bow.

• Result in quicker planing off, especially with a heavy load or a stern heavy boat.

• Generally improve the ride in choppy water.

• Increase steering torque or pull to the right (with the normal right hand rotation propeller).

10263

abc

Page 79

FEATURES AND CONTROLS

eng 69

• In excess, can lower the bow of some boats to a point where 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 oversteering) if any turn is attempted or if a significant wave is encountered.

Adjusting the outboard away from the boat transom can:

• Lift the bow out of the water.

• Generally increase top speed.

• Increase clearance over submerged objects or a shallow bottom.

• Increase steering torque or pull to the left at a normal installation height (with the normal right hand rotation propeller).

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

Tiller Handle Models with Manual Tilt

BASIC TILTING OPERATION

The tilt feature allows the operator to tilt the outboard to a higher tilt angle for operation in shallow water, or tilt the outboard to the full up position.

When running the outboard, keep the tilt lever in the release position. This allows the outboard to return to the running position if the outboard should ever hit an underwater obstacle and be lifted up.

Moving the tilt lever to the tilt position will allow the outboard to lock into the shallow water drive position or the full up position.

a - Release position b - Tilt position

15920

Page 80

FEATURES AND CONTROLS

70 eng

TILTING OUTBOARD TO FULL UP POSITION

1. Stop the engine.

2. Shift the outboard to forward gear position.

3. Position the tilt lever to the tilt position.

4. Take hold of the top cowl grip and tilt the outboard all the way up until it locks in place.

15924

LOWERING OUTBOARD DOWN TO RUN POSITION

Position the tilt lever to the release position. Raise outboard slightly to release it from its locked position and gently lower it.

SHALLOW WATER OPERATION

The shallow water drive position on the outboard allows you to position the outboard at a higher tilt angle to prevent hitting bottom.

IMPORTANT: Before tilting outboard into shallow water drive position, reduce engine speed to idle and shift engine into forward gear. IMPORTANT: While in shallow water drive position, do not operate the outboard in reverse. Operate the outboard at slow speed and keep the cooling water intake submerged.

1. Reduce engine speed to idle.

2. Shift engine into forward gear position.

3. Position the tilt lever to the tilt position.

4. Take hold of the top cowl grip and tilt up the outboard until it locks in the shallow water running position.

Page 81

FEATURES AND CONTROLS

eng 71

5. To release the outboard out of shallow water drive, position the tilt lever to the release position, and slightly lift up the outboard, and than gently lower it down.

15925

SETTING THE OPERATION ANGLE OF YOUR OUTBOARD

The vertical operating angle of your outboard is adjusted by changing the position of the tilt pin in the six adjustment holes provided. Proper adjustment allows the boat to run stable, achieve optimum performance, and minimize steering effort.

NOTE: Refer to the following lists when adjusting the operating angle of your outboard.

The tilt pin should be adjusted so the outboard is positioned to run perpendicular to the water when the boat is running at full speed. This allows the boat to be driven parallel to the water.

Page 82

FEATURES AND CONTROLS

72 eng

Arrange passengers and load in the boat so the weight is distributed evenly.

a - Too much angle (stern down ‑ bow up) b - Not enough angle (stern up ‑ bow down) c - Angle adjusted properly (bow slightly up)

Consider the following lists carefully when adjusting the operating angle of your outboard.

Adjusting the outboard close to the boat transom can:

• Lower the bow.

• Result in quicker planing off, especially with a heavy load or a stern heavy boat.

• Generally improve the ride in choppy water.

• Increase steering torque or pull to the right (with the normal right hand rotation propeller).

abc

15927

Page 83

FEATURES AND CONTROLS

eng 73

Adjusting the outboard away from the boat transom can:

• Lift the bow out of the water.

• Generally increase top speed.

• Increase clearance over submerged objects or a shallow bottom.

• Increase steering torque or pull to the left at a normal installation height (with the normal right hand rotation propeller).

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

Page 84

FEATURES AND CONTROLS

74 eng

Power Trim and Tilt (if Equipped)

Your outboard has a trim/tilt control called power trim. This enables the operator to easily adjust the position of the outboard by pressing the trim switch. Moving the outboard in closer to the boat transom is called trimming in or down. Moving the outboard further away from the boat transom is called trimming out or up. The term trim generally refers to the adjustment of the outboard within the first 20° range of travel. This is the range used while operating your boat on plane. The term tilt is generally used when referring to adjusting the outboard further up and out of the water. With the engine turned off, the outboard can be tilted out of the water. At low idle speed, the outboard can also be tilted up past the trim range to permit, for example, shallow water operation.

a - Remote control trim switch b - Panel mount trim switch c - Tiller handle trim switch d - Cowl mounted trim switch (option) e - Trim range of travel f - Tilt range of travel

10265

Page 85

FEATURES AND CONTROLS

eng 75

POWER TRIM OPERATION

With most boats, operating around the middle of the trim range will give satisfactory results. However, to take full advantage of the trimming capability there may be times when you choose to trim your outboard all the way in or out. Along with an improvement in some performance aspects comes a greater responsibility for the operator, and this is being aware of some potential control hazards.

The most significant control hazard is a pull or torque that can be felt on the steering wheel or tiller handle. This steering torque results from the outboard being trimmed so that the propeller shaft is not parallel to the water surface.

WARNING

Trimming the outboard beyond a neutral steering condition may result in a pull on the steering wheel or tiller handle and loss of boat control. Maintain control of the boat if trimming beyond a neutral steering condition.

Consider the following lists carefully.

1. Trimming in or down can:

• Lower the bow.

• Result in quicker planing off, especially with a heavy load or a stern heavy boat.

• Generally improve the ride in choppy water.

• Increase steering torque or pull to the right (with the normal right hand rotation propeller).

• In excess, can lower the bow of some boats to a point where 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.

Page 86

FEATURES AND CONTROLS

76 eng

WARNING

Operating the boat at high speeds with the outboard trimmed too far under can create excessive bow steer, resulting in the operator losing control of the boat. Install the trim limit pin in a position that prevents excessive trim under and operate the boat in a safe manner.

• In rare circumstances, the owner may decide to limit the trim in. This can be accomplished by repositioning the tilt stop pin into whatever adjustment hole in the transom bracket is desired.

2. Trimming out or up can:

• Lift the bow higher out of the water.

• Generally increase top speed.

• Increase clearance over submerged objects or a shallow bottom.

• Increase steering torque or pull to the left at a normal installation height (with the normal right hand rotation propeller).

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

• Cause engine overheating if any cooling water intake holes are above the waterline.

TILTING OPERATION

To tilt outboard, shut off the engine and press the trim/tilt switch or auxiliary tilt switch to the up position. The outboard will tilt up until the switch is released or it reaches its maximum tilt position.

1. Engage the tilt support lever by rotating lever down.

2. Lower outboard to rest on the tilt support lever.

Page 87

FEATURES AND CONTROLS

eng 77

3. Disengage the tilt support lever, by slightly tilting up the outboard and releasing the tilt support bracket. Lower the outboard.

9703

MANUAL TILTING

If the outboard cannot be tilted using the power trim/tilt switch, the outboard can be manually tilted.

NOTE: The manual tilt release valve must be tightened before operating the outboard to prevent the outboard from tilting up during reverse operation.

Turn out the manual tilt release valve 3 turns counterclockwise. This allows manual tilting of the outboard. Tilt the outboard to the desired position and tighten the manual tilt release valve.

9976

Page 88

FEATURES AND CONTROLS

78 eng

AUXILIARY TILT SWITCH

The auxiliary tilt switch can be used to tilt the outboard up or down using the power trim system.

9974

SHALLOW WATER OPERATION

When operating your boat in shallow water, you can tilt the outboard beyond the maximum trim range to prevent hitting bottom.

1. Reduce engine speed below 2000 RPM.

2. Tilt outboard up. Make sure all the water intake holes stay submerged at all times.

3. Operate the engine at slow speed only.

Page 89

FEATURES AND CONTROLS

eng 79

Trim Tab Adjustment

Propeller steering torque will cause your boat to pull in one direction. This steering torque is a normal result from your outboard not trimmed with the propeller shaft parallel to the water surface. The trim tab can help to compensate for this steering torque in many cases and can be adjusted within limits to reduce any unequal steering effort.

9989

NOTE:

Trim tab adjustment will have little effect reducing steering torque if the outboard is installed with the anti‑ventilation plate approximately 50 mm (2 in.) or more above the boat bottom.

MODELS WITHOUT POWER TRIM

Operate your boat at normal cruising speed trimmed to desired position by installing the tilt pin in the desired tilt pin hole. Turn your boat left and right and note the direction the boat turns more easily.

If adjustment is necessary, loosen trim tab bolt and make small adjustments at a time. If the boat turns more easily to the left, move the trailing edge of trim tab to the left. If the boat turns more easily to the right move the trailing edge of trim tab to the right. Retighten bolt and retest.

MODELS WITH POWER TRIM

Operate your boat at normal cruising speed, trimmed to desired position. Turn your boat left and right and note the direction the boat turns more easily.

Page 90

FEATURES AND CONTROLS

80 eng

Page 91

OPERATION

eng 81

Prestarting Check List

• Operator knows safe navigation, boating, and operating procedures.

• An approved personal flotation device of suitable size for each person aboard and readily accessible (it is the law).

• A ring type life buoy or buoyant cushion designed to be thrown to a person in the water.

• Know your boats' maximum load capacity. Look at the boat capacity plate.

• Fuel supply OK.

• Arrange passengers and load in the boat so the weight is distributed evenly and everyone is seated in a proper seat.

• Tell someone where you are going and when you expect to return.

• It is illegal to operate a boat while under the influence of alcohol or drugs.

• Know the waters and area you will be boating; tides, currents, sand bars, rocks, and other hazards.

• Make inspection checks listed in Maintenance ‑ Inspection and Maintenance Schedule.

Operating in Freezing Temperatures

When using your outboard or having your outboard moored in freezing or near freezing temperatures, keep the outboard tilted down at all times so the gearcase is submerged. This prevents the trapped water in the gearcase from freezing and causing possible damage to the water pump and other components.

If there is a chance of ice forming on the water, the outboard should be removed and drained completely of water. If ice should form at the water level inside the outboard driveshaft housing, it will block water flow to the engine causing possible damage.

Page 92

OPERATION

82 eng

Operating in Saltwater or Polluted Water

We recommend that you flush the internal water passages of your outboard with fresh water after each use in salt or polluted water. This will prevent a buildup of deposits from clogging the water passages. Refer to Maintenance ‑ Flushing the Cooling System.

If you keep your boat moored in the water, always tilt the outboard so the gearcase is completely out of water (except in freezing temperatures) when not in use.

Wash the outboard exterior and flush out the exhaust outlet of the propeller and gearcase with fresh water after each use. Each month, spray Mercury Precision or Quicksilver Corrosion Guard on external metal surfaces. Do not spray on corrosion control anodes as this will reduce the effectiveness of the anodes.

Pre‑Starting Instructions

1. Connect the remote fuel line to the outboard. Make sure connector is snapped into place.

9600

2. Check the engine oil level.

9601

Page 93

OPERATION

eng 83

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.

3. Make sure the cooling water intake is submerged.

26837

Engine Break‑in Procedure

IMPORTANT: Failure to follow the engine break‑in procedures can result in poor performance throughout the life of the engine and can cause engine damage. Always follow break‑in procedures.

1. For the first hour of operation, run the engine at varied throttle settings up to 3500 RPM or at approximately half throttle.

2. For the second hour of operation, run the engine at varied throttle settings up to 4500 RPM or at three‑quarter throttle, and during this period of time, run it at full throttle for approximately one minute every ten minutes.

3. For the next eight hours of operation, avoid continuous operation at full throttle for more than five minutes at a time.

Starting the Engine ‑ Remote Control Models

Before starting, read the Pre‑Starting Check List, Pre‑Starting Instructions, and Engine Break‑in Procedure in the Operation section.

Page 94

OPERATION

84 eng

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.

NOTE: If the outboard has run out of fuel, or has been in storage for an extended period of time, additional attempts to start the engine will be required to purge the fuel system of air.

1. Open fuel tank vent screw (in filler cap) on manual venting type fuel tanks.

19748

2. Position the fuel line primer bulb so the arrow on the side of the bulb is pointing up. Squeeze the fuel line primer bulb several times until it feels firm.

27348

IMPORTANT: To prevent engine flooding, do not squeeze the primer bulb after the engine has warmed up.

3. Set the lanyard stop switch to "RUN" position. Refer to General Information ‑ Lanyard Stop Switch.

19791

Page 95

OPERATION

eng 85

4. Shift outboard to neutral ("N") position.

26838

5. Move the neutral fast idle speed feature to the fully closed position.

NOTE: Starting flooded engine ‑ Advance the neutral fast idle speed feature to the maximum fast idle speed position and continue to crank the engine for starting. Immediately reduce engine speed after engine starts.

6. Turn ignition key to the "START" position. If engine fails to start in ten seconds, return key to "ON" position, wait 30 seconds and try again.

19804

7. After engine starts, check for a steady stream of water flowing out of the water pump indicator hole.

9647

Page 96

OPERATION

86 eng

IMPORTANT: If no water is coming out of the water pump indicator hole, stop engine and check cooling water intake for obstruction. No obstruction may indicate a water pump failure or blockage in the cooling system. These conditions will cause the engine to overheat. Have the outboard checked by your dealer. Operating the engine while overheated may cause serious engine damage.

WARMING UP ENGINE

Before beginning operation, allow the engine to warm up at idling speed for three minutes.

Starting the Engine ‑ Tiller Handle Models

Before starting, read the Pre‑Starting Check List, Pre‑Starting Instructions, and Engine Break‑in Procedure in the Operation section.

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.

NOTE:

If the outboard has run out of fuel, or has been in storage for an extended period of time, additional attempts to start the engine will be required to purge the fuel system of air.

1. Open fuel tank vent screw (in filler cap) on manual venting type fuel tanks.

19748

Page 97

OPERATION

eng 87

2. Position the fuel line primer bulb so the arrow on the side of the bulb is pointing up. Squeeze the fuel line primer bulb several times until it feels firm.

27348

IMPORTANT: To prevent engine flooding, do not squeeze the primer bulb after the engine has warmed up.

3. Set the lanyard stop switch to "RUN" position. Refer to General Information ‑ Lanyard Stop Switch.

19791

4. Set the tiller handle grip to neutral start position.

NEUTRAL

START

NEUTRAL

START

10051

5. Models with gas assist tilt ‑ Position the tilt lock lever to the lock position.

LOCK

FREE

10251

Page 98

OPERATION

88 eng

6. Manual starting models ‑ Pull the starter rope slowly, until you feel the starter engage, then pull rapidly to crank the engine. Allow rope to return slowly. Repeat until engine starts.

10173

7. Electric starting models ‑ Push the starter button and crank the engine. Release button when engine starts. Do not operate starter motor continuously for longer than ten seconds at a time. If engine fails to start in ten seconds, wait 30 seconds and try again.

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8. Check for a steady stream of water flowing out of the water pump indicator hole.

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OPERATION

eng 89

WARMING UP ENGINE

Before beginning operation, allow the engine to warm up at idling speed for three minutes.

Gear Shifting

IMPORTANT: Never shift outboard into gear unless engine speed is at idle. Do not shift outboard into reverse when the engine is not running.

• Your outboard has three gear shift positions to provide operation: Forward (F), Neutral (N), and Reverse (R).

•

Tiller Handle Models ‑ Reduce engine speed to idle before shifting.

a - (R) Reverse b - (N) Neutral c - (F) Forward

•

Remote Control Models ‑ When shifting, always stop at neutral position and allow the engine speed to return to idle.

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• Always shift outboard into gear with a quick motion.

cab

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OPERATION

90 eng

• After shifting outboard into gear, advance the remote control lever or rotate the throttle grip (tiller handle) to increase speed.

Stopping the Engine

1. Remote control models ‑ Reduce engine speed and shift outboard to neutral position. Turn ignition key to "OFF" position.

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2. Tiller handle models ‑ Reduce engine speed and shift outboard to neutral position. Push in the engine stop button or turn ignition key to "OFF" position.

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Emergency Starting

If the starter system fails, use the spare starter rope (provided) and follow procedure.

Mercury 25 EFI FourStroke, 30 EFI FourStroke, 25 FourStroke User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual