Yamaha VZ225C, Z250C, LZ250C, VZ250C User Manual

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OWNER’S MANUAL

VZ225C Z250C LZ250C VZ250C

U.S.A.Edition

LIT-18626-05-68

USE UNLEADED STRAIGHT GASOLINE ONLY

CAUTION

• Gasoline containing lead can cause performance loss and

• Do not use gasoline mixed with oil during the break-in period

and engine damage.

001629

or any time afterwards.

YAMALUBE 2 STROKE OUTBOARD OIL IS RECOMMENDED

EMU01449

TO THE OWNER

Thank you for choosing a Yamaha outboard motor. This Owner’s manual contains information needed for proper operation, maintenance and care. A thorough understanding of these simple instructions will help you obtain maximum enjoyment from your new Yamaha. If you have any question about the operation or maintenance of your outboard motor, please consult a Yamaha dealer.

In this Owner’s Manual particularly important information is distinguished in the following ways.

Q The Safety Alert Symbol means

ATTENTION! BECOME ALERT! YOUR SAFETY IS INVOLVED!

Failure to follow WARNING instructions could result in severe injury or death to the machine operator, a bystander, or a person inspecting or repairing the outboard motor.

A CAUTION indicates special precautions that must be taken to avoid damage to the outboard motor.

NOTE:

A NOTE provides key information to make procedures easier or clearer.

* Yamaha continually seeks advancements

in product design and quality. Therefore, while this manual contains the most current product information available at the time of printing, there may be minor discrepancies between your machine and this manual. If there is any question concerning this manual, please consult your Yamaha dealer.

NOTE:

The Z250TR, LZ250TR, VZ250TR, and their standard accessories are used as a base for the explanations and illustrations in this manual. Therefore, some items may not apply to every model.

EMU01446

VZ225C, Z250C, LZ250C, VZ250C

OWNER'S MANUAL

1st Edition, August 2003

Any reprinting or unauthorized use

without the written permission of

Yamaha Motor Corporation, USA

is expressly prohibited.

Printed in Japan

P/N LIT-18626-05-68

EMU00003

CONTENTS

GENERAL INFORMATION

BASIC COMPONENTS

OPERATION

MAINTENANCE

TROUBLE RECOVERY

INDEX

READ THIS OWNER’S MANUAL CAREFULLY

BEFORE OPERATING YOUR OUTBOARD MOTOR.

EMU00004

Chapter 1

GENERAL

INFORMATION

IDENTIFICATION NUMBERS

RECORD .................................................1-1

Outboard motor serial number..............1-1

Key number...........................................1-1

EMISSION CONTROL INFORMATION ..1-2

North American models ........................1-2

Star labels.............................................1-3

SAFETY INFORMATION ........................1-4

IMPORTANT LABELS ............................1-6

BASIC BOATING RULES .......................1-8

FUELING INSTRUCTIONS...................1-12

Gasoline..............................................1-13

Engine oil ............................................1-13

BATTERY REQUIREMENT...................1-14

PROPELLER SELECTION ...................1-15

START-IN-GEAR PROTECTION...........1-16

YAMAHA MOTOR CO., LTD. MADE IN JAPAN PAYS D'ORIGINE JAPON

001383

001568

YAMAHA

EMU00005

IDENTIFICATION NUMBERS

RECORD

EMU00007

OUTBOARD MOTOR SERIAL NUMBER

The outboard motor serial number is stamped on the label attached to the port side of the clamp-bracket. Record your outboard motor serial number in the spaces provided to assist you in ordering spare parts from your Yamaha dealer or for reference in case your outboard motor is stolen.

1 Outboard motor serial number

EMU00008

KEY NUMBER

123

1-1

000319

If a main key switch is equipped with the motor, the key identification number is stamped on your key as shown in the illustration. Record this number in the space provided for reference in case you need a new key.

1 Key number

001592

EMU01385

EMISSION CONTROL

INFORMATION

EMU01902

NORTH AMERICAN MODELS

This engine conforms to U.S. Environmental Protection Agency (EPA) regulations for marine SI engines. See the label affixed to your engine for details.

EMISSION CONTROL INFORMATION

ENGINE FAMILY :

THIS ENGINE CONFORMS TO 2001 U.S. EPA REGULATIONS FOR MARINE SI ENGINES. THIS ENGINE CONFORMS TO 2001 CALIFORNIA EMISSION REGULATIONS FOR SI MARINE ENGINES. REFER TO THE OWNERS MANUAL FOR MAINTENANCE SPECIFICATIONS AND ADJUSTMENTS.

g/kw-hr

FELs : SPARK PLUG :

DISPLACEMENT :

ADVERTISED POWER :

IDLE SPEED : SPARK PLUG GAP (mm) :

FUEL : GASOLINE VALVE LASH (mm) :

rpm IN NEUTRAL

IN EX

DFI

Manufactured:

Approval label of Emission control certificate

This label is attached to the bottom cowling.

1 Emission control information label

New Technology ; (4-stroke/HPDI) DFI

Manufactured date label

This label is attached to the clamp bracket.

2 Manufactured date label

1-2

001569

EMU01389

STAR LABELS

Your outboard motor is labeled with a California Air Resources Board (CARB) star label. See below for a description of your particular label.

1 Star label

One Star - Low Emission

The one-star label identifies engines that meet the Air Resources Board’s 2001 exhaust emission standards. Engines meeting these standards have 75% lower emissions than conventional carbureted twostroke engines. These engines are equivalent to the U.S. EPA’s 2006 standards for marine engines.

Two Stars - Very Low Emission

The two-star label identifies engines that meet the Air Resources Board’s 2004 exhaust emission standards. Engines meeting these standards have 20% lower emissions than One Star-Low-Emission engines.

1-3

Three Stars - Ultra Low Emission

The three-star label identifies engines that meet the Air Resources Board’s 2008 exhaust emission standards. Engines meeting these standards have 65% lower emissions than One Star-Low-Emission engines.

EMU00917

QSAFETY INFORMATION

8 Before mounting or operating the out-

board motor, read this entire manual. Reading it should give you an understanding of the motor and its operation.

8 Before operating the boat, read any

owner’s or operator’s manuals supplied with it and all labels. Be sure you understand each item before operating.

8 Do not overpower the boat with this out-

board motor. Overpowering the boat could result in loss of control. The rated power of the outboard should be equal to or less than the rated horsepower capacity of the boat. If the rated horsepower capacity of the boat is unknown, consult the dealer or boat manufacturer.

8 Do not modify the outboard. Modifications

could make the motor unfit or unsafe to use.

8 Never operate after drinking alcohol or

taking drugs. About 50% of all boating fatalities involve intoxication.

8 Have an approved personal flotation

device (PFD) on board for every occupant. It is a good idea to wear a PFD whenever boating. At a minimum, children and non-swimmers should always wear PFDs, and everyone should wear PFDs when there are potentially hazardous boating conditions.

8 Gasoline is highly flammable, and its

vapors are flammable and explosive. Handle and store gasoline carefully. Make sure there are no gas fumes or leaking fuel before starting the engine.

8 This product emits exhaust gases which

contain carbon monoxide, a colorless, odorless gas which may cause brain damage or death when inhaled. Symptoms include nausea, dizziness, and drowsiness. Keep cockpit and cabin areas well ventilated. Avoid blocking exhaust outlets.

8 Check throttle, shift, and steering for

proper operation before starting the engine.

8 Attach the engine stop switch lanyard to a

secure place on your clothing, or your arm or leg while operating. If you accidentally leave the helm, the lanyard will pull from the switch, stopping the engine.

8 Know the marine laws and regulations

where you will be boating - and obey them. Refer to the “RULES OF THE ROAD” section for basic boating rules.

8 Stay informed about the weather. Check

weather forecasts before boating. Avoid boating in hazardous weather.

8 Tell someone where you are going: leave

a Float Plan with a responsible person. Be sure to cancel the Float Plan when you return.

1-4

8 Use common sense and good judgment

when boating. Know your abilities, and be sure you understand how your boat handles under the different boating conditions you may encounter. Operate within your limits, and the limits of your boat. Always operate at safe speeds, and keep a careful watch for obstacles and other traffic.

8 Always watch carefully for swimmers dur-

ing the engine operation.

8 Stay away from swimming areas. 8 When a swimmer is in the water near you

shift into neutral and shut off the engine.

8 Be informed about boating safety.

Additional publications and information can be obtained from many organizations, including the following:

United States Coast Guard

Consumer Affairs Staff (G-BC) Office of Boating, Public, and Consumer Affairs U.S. Coast Guard Headquarters Washington, D.C. 20593-0001 Boating Safety Hotline: 1-800-368-5647

National Marine Manufacturers

Association (NMMA)

401 N. Michigan Ave. Chicago, Il 60611

Marine Retailers Association of America

155 N. Michigan Ave. Chicago, Il 60601

1-5

WARNING

6K1-83623-41

YAMAHA

Use only a counterclockwise rotation propeller with this engine. Counterclockwise propellers are marked with a letter "L" after the size indication. The wrong type of propeller could cause the boat to go in an unexpected direction, which could lead to an accident.

WARNING

¡Be sure shift control is in neutral

before starting engine. (except 2HP)

¡Do not touch or remove electrical parts

when starting or during operation.

¡Keep hands,hair,and clothes away from flywheel

and other rotating parts while engine is running.

6A1-83625-41

ENGINE OIL ONLY

WARNING

6E5-13437-43

Pour the engine oil into this oil tank, not gasoline.

RECOMMENDED OIL:

YAMALUBE 2 STROKE OUTBOARD OIL or an equivalent TC-W3 certified outborad oil.

Do not add gasoline to the oil tank. Fire or explosion could result.

OIL TANK

CAPACITY:10.5 LITERS

11.1 U.S. qt.

9.2 IMP. qt.

q w

EMU00014*

IMPORTANT LABELS

001582

000577

2 (LZ250)

WARNING LABELS

NOTE:

For engine oil specifications, see “Engine oil” in this chapter.

1-6

CAUTION LABELS

1-7

EMU00015

BASIC BOATING RULES

(Rules of the road)

Just as there are rules which apply when you are driving on streets and high ways, there are waterway rules which apply when you are driving your boat. These rules are used internationally, and are also enforced by the United States Coast Guard and local agencies. You should be aware of these rules, and follow them whenever you encounter another vessel on the water.

Several sets of rules prevail according to geographic location, but are all basically the same as the International Rules of the Road. The rules presented here in your Owner’s Manual are condensed, and have been provided for your convenience only. Consult your local U.S. Coast Guard Auxiliary or Department of Motor Vehicles for a complete set of rules governing the waters in which you will be using your boat.

STEERING AND SAILING RULES AND SOUND SIGNALS

Whenever two vessels on the water meet one another, one vessel has the right-ofway; it is called the “stand-on” vessel. The vessel which does not have the right-of-way is called the “give-way” or “burdened” ves- sel. These rules determine which vessel has the right-of-way, and what each vessel should do.

Stand-on vessel

The vessel with the right-of-way has the duty to continue its course and speed, except to avoid an immediate collision. When you maintain your direction and speed, the other vessel will be able to determine how best to avoid you.

Give-way vessel

The vessel which does not have the rightof-way has the duty to take positive and timely action to stay out of the way of the Stand-On vessel. Normally, you should not cross in front of the vessel with the right-ofway. You should slow down or change directions briefly and pass behind the other vessel. You should always move in such a way that the operator of the other vessel can see what you are doing.

“The general prudential rule”

This rule is called Rule 2 in the International Rules and says,

‘In obeying and construing these rules due regard shall be had to all dangers of navigation and collision, and to any special circumstances, which may render a departure from the above rules necessary in order to avoid immediate danger.’

In other words, follow the standard rules except when a collision will occur unless both vessels try to avoid each other. If that is the case, both vessels become “Give- Way” vessels.

1-8

102045

RULES WHEN ENCOUNTERING VESSELS

There are three main situations which you may encounter with other vessels which could lead to a collision unless the Steering Rules are followed:

Meeting (you are approaching another vessel head-on) Crossing (you are traveling across the other vessel’s path) Overtaking (you are passing or being passed by another vessel)

In the following illustration, your boat is in the center. You should give the right-of-way to any vessels shown in white area (you are the Give-Way vessel). Any vessels in the shaded area must yield to you (they are the Give-Way vessels). Both you and the meeting vessel must alter course to avoid each other.

one another if you continue on your set course and speed.

102044

Crossing

When two power driven vessels are crossing each other’s path close enough to run the risk of collision, the vessel which has the other on the starboard (right) side must keep out of the way of the other. If the other vessel is on your right, you must keep out of its way; you are the Give-Way vessel. If the other vessel is on your port (left) side, remember that you should maintain course and direction, provided the other vessel gives you the right-of-way as it should.

Meeting

If you are meeting another power vessel head on, and are close enough to run the risk of collision, neither of you has the rightof-way! Both of you should alter course to avoid an accident. You should keep the other vessel on your port (left) side. This rule doesn’t apply if both of you will clear

1-9

102046

Overtaking

If you are passing another vessel, you are the “Give-Way” vessel. This means that the other vessel is expected to maintain its course and speed. You must stay out of its

way until you are clear of it. Likewise, if another vessel is passing you, you should maintain your speed and direction so that the other vessel can steer itself around you.

OTHER SPECIAL SITUATIONS

There are three other rules you should be aware of when driving your boat around other vessels.

Narrow channels and bends

When navigating in narrow channels, you should keep to the right when it is safe and practical to do so. If the operator of a powerdriven vessel is preparing to go around a bend that may obstruct the view of other water vessels, the operator should sound a prolonged blast on the whistle (4 to 6 seconds). If another vessel is around the bend, it too should sound the whistle. Even if no reply is heard, however, the vessel should still proceed around the bend with caution. If you navigate such waters with your boat, you will need to carry a portable air horn, available from local marine supply stores.

Fishing vessel right-of-way

All vessels which are fishing with nets, lines or trawls are considered to be “fishing vessels” under the International Rules. Vessels with trolling lines are not considered fishing vessels. Fishing vessels have the right-ofway regardless of position. Fishing vessels cannot, however, impede the passage of other vessels in narrow channels.

Sailing vessel right-of-way

Sailing vessels should normally be given the right-of-way. The exceptions to this are:

1. When the sailing vessel is overtaking the power-driven vessel, the power-dri-

ven vessel has the right-of-way.

2. Sailing vessels should keep clear of any fishing vessel.

3. In a narrow channel, a sailing vessel should not hamper the safe passage of a power-driven vessel which can navigate only in such a channel.

Reading buoys and other markers

The waters of the United states are marked for safe navigation by the lateral system of buoyage. Simply put, buoys and markers have an arrangement of shapes, colors, numbers and lights to show which side of the buoy a boater should pass on when navigating in a particular direction. The markings on these buoys are oriented from the perspective of being entered from seaward (the boater is going towards the port). This means that red buoys are passed on the starboard (right) side when proceeding from open water into port, and black buoys are to port (left) side. When navigating out of port, your position with respect to the buoys should be reversed; red buoys should be to port and black buoys to starboard. Many bodies of water used by boaters are entirely within the boundaries of a particular state. The Uniform State Waterway Marking System has been devised for these waters. This system uses buoys and signs with distinctive shapes and colors to show regulatory or advisory information. These markers are white with black letters and orange boarders. They signify speed zones, restricted areas, danger areas, and general information.

1-10

Remember, markings may vary by geo-

Proceeding toward head

of navigation from seaward

CAN BUOY

Odd number. Leave to port.

SECONDARY CHANNEL BUOYS

STARTS NEW NUMBERING SYSTEM

old new

C " 1

NUN BUOY

Even number. Leave to starboard

No change

BUOY

COLOR CODE

BLACK

RED

GREEN

SECONDARY CHANNEL

MAIN CHANNEL

old

new

Odd number. increasing toward head of naviga-

MAIN CHANNEL BUOYS

" "

tion.Leave to port (left) proceeding upstream.

LIGHTED BUOY (Port Hand)`

White Light

Green Light

old

new

old

new

old

new

LIGHTED BUOY (Starboard Hand)`

" "

Even number,increasing toward head of navigation. Leave to starboard (right) proceeding upstream.

White Light Red Light

LIGHTED SAFE WATER BUOY

No number. Marks midchannel, pass on either side. Letter has no lateral significance, used for

No number. Topmost band red

preferred

Top Mark

White Light

LIGHTED PREFERRED CHANNEL TO

PORT BUOY

identification and location purposes.

channel is to left of buoy. Letter has no lateral significance, used for identification and location purposes.

Red Light

Red or White Light

102052

graphic location. Always consult local boating authorities before driving your boat in unfamiliar waters.

1-11

EMU01903

FUELING INSTRUCTIONS

GASOLINE AND ITS VAPORS ARE HIGHLY FLAMMABLE AND EXPLOSIVE! 8 Do not smoke when refueling, and

keep away from sparks, flames, or other sources of ignition.

8 Stop engine before refueling. 8 Refuel in a well-ventilated area. Refuel

portable fuel tanks off the boat.

8 Take care not to spill gasoline. If gaso-

line spills, wipe it up immediately with dry rags.

8 Do not overfill the fuel tank. 8 Tighten the filler cap securely after

refueling.

8 If you should swallow some gasoline,

inhale a lot of gasoline vapor, or get gasoline in your eyes, get immediate medical attention.

8 If any gasoline spills onto your skin,

immediately wash with soap and water. Change clothing if gasoline spills on it.

8 Touch the fuel nozzle to the filler open-

ing or funnel to help prevent electrostatic sparks.

Use only new clean gasoline which has been stored in clean containers and is not contaminated with water or foreign matter.

1-12

EMU01804

GASOLINE

Recommended gasoline:

Regular unleaded gasoline with a minimum octane rating of 86 (Pump Octane Number) = (R+M)/2

If knocking or pinging occurs, use a different brand of gasoline or premium unleaded fuel.

EMU00027

Gasohol

There are two types of gasohol: gasohol containing ethanol and that containing methanol. Gasohol containing ethanol can be used if ethanol content does not exceed 10% and the fuel meets minimum octane ratings. Gasohol containing methanol is not recommended by Yamaha because it can cause fuel system damage or engine performance problems.

1-13

EMU19570

ENGINE OIL

Recommended engine oil:

YAMALUBE 2 STROKE OUTBOARD OIL

Use Yamalube 2-M outboard oil. If Yamalube 2-M is not available, use only another outboard motor manufacturer’s factory-brand oil with TC-W3 rating.

Serious engine damage can result from the use of lower quality oil, including some commonly available oil brands with “ TC-W3” on their label. To avoid the risk, use only Yamalube 2-M or, if necessary, another outboard motor manufacturer’s factory-brand TC-W3 oil.

EMU01775

BATTERY REQUIREMENT

Do not use a battery that does not meet the specified capacity. If a battery which does not meet specifications is used, the electric system could perform poorly or be overloaded, causing electric system damage.

For electric start models, choose a battery which meets the following specifications.

EMU01861

Minimum cold cranking amps (CCA/SAE): 512 amps at -18°C (-0.4°F) Minimum marine cranking amps (MCA/ABYC): 675 amps at 0°C (32°F) Minimum reserve capacity (RC/SAE):

182 minutes

EMU01787

NOTE:

The engine cannot be started if battery voltage is too low.

1-14

EMU01395

PROPELLER SELECTION

The performance of your outboard motor will be critically affected by your choice of propeller, as an incorrect choice could adversely affect performance and could also seriously damage the motor. Engine speed depends on the propeller size and boat load. If engine speed is too high or too low for good engine performance, this will have an adverse effect on the engine.

Yamaha outboard motors are fitted with propellers chosen to perform well over a range of applications, but there may be uses where a propeller with a different pitch would be more appropriate. For a greater operating load, a smaller-pitch propeller is more suitable as it enables the correct engine speed to be maintained. Conversely, a larger-pitch propeller is more suitable for a smaller operating load.

1-15

Yamaha dealers stock a range of propellers, and can advise you and install a propeller on your outboard that is best suited to your application.

NOTE:

At full throttle and under a maximum boat load, the engine’s rpm should be within the upper half of the full throttle operating range, as listed in “SPECIFICATIONS” on page 4-1. Select a propeller which fulfills this requirement. If operating under conditions which allow the engine’s rpm to rise above the maxi- mum recommended range (such as light boat loads), reduce the throttle setting to maintain the rpm in the proper operating range.

602022

14-1/2 x 17 - M

qwe

1 Propeller diameter (in inches) 2 Propeller pitch (in inches) 3 Type of propeller (propeller mark)

Refer to the section “CHECKING PROPELLER” for instructions on propeller removal and installation.

EMU01209

START-IN-GEAR PROTECTION

Yamaha outboard motors or Yamaha approved remote control units are equipped with start-in-gear protection device(s). This feature permits the engine to be started only when it is Neutral. Always select Neutral before starting the engine.

1-16

-MEMO-

EMU00037

Chapter 2

BASIC COMPONENTS

MAIN COMPONENTS.............................2-1

OPERATIONS OF CONTROLS AND

OTHER FUNCTIONS ..............................2-3

Remote control .....................................2-3

Trim tab .................................................2-9

Power trim/tilt switch ...........................2-10

Digital tachometer...............................2-11

Digital speedometer............................2-13

Fuel management meter.....................2-16

Tilt support lever .................................2-21

Top cowling lock levers .......................2-21

Flushing device...................................2-21

WARNING SYSTEM .............................2-22

Overheat warning ...............................2-22

Oil level warning and oil filter

clogging warning.................................2-23

Water separator warning ....................2-24

EMU01206

MAIN COMPONENTS

1 Top cowling 2 Cowling lock levers 3 Trim tab (anode) 4 Propeller 5 Cooling water inlet (VZ225, VZ250) 6 Cooling water inlet (Z250, LZ250) 7 Anti-cavitation plate 8 Anode 9 Clamp bracket 0 Tilt support lever q Flushing device w Power trim and tilt switch e Cooling water pilot hole

2-1

* May not be exactly as shown; also may not be

included as standard equipment on all models.

TRIP

TIME

BATT

Km/h knot mph

mile

P S

EMU01206

MAIN COMPONENTS

YAMAHA

SPEED

Km/h knot mph

km mile

TRIP

TIME

BATT

set

mode

YAMAHA

FUEL MANAGEMENT

ECON SYNCTTL

set

mode

I/h gph

Km/L mpg

1 Remote control box (side mount type)

2 Remote control box (binnacle mount type)

3 Switch panel (for use with 2)

4 Digital tachometer

5 Digital speedometer

6 Fuel management meter

7 Remote oil tank

* May not be exactly as shown; also may not be

included as standard equipment on all models.

2-2

000322

t y

EMU00039

OPERATIONS OF CONTROLS

AND

OTHER FUNCTIONS

EMU01273

REMOTE CONTROL

Both the shifter and the throttle are actuated by the remote control lever. In addition, the electrical switches are mounted on the

001276

STARTOFF

remote control box.

å Side mount remote control box ∫ Binnacle mount remote control box ç Switch panel (for use with ∫)

1 Remote control lever 2 Neutral interlock trigger 3 Neutral throttle lever 4 Free accelerator 5 Main switch 6 Engine stop lanyard switch 7 Power trim/tilt switch 8 Throttle friction adjusting screw

2-3

001277

701031

EMU00098

Remote Control Lever

Moving the lever forward from the Neutral position engages Forward gear. Pulling the lever back from Neutral engages Reverse. The engine will continue to run at idle until the lever is moved about 35° (a detent can be felt). Moving the lever farther opens the throttle, and the engine will begin to accelerate.

1 Neutral 2 Forward 3 Reverse 4 Shift 5 Fully closed 6 Throttle 7 Fully open

tty

702032

EMU00099

Neutral Interlock Trigger

UP DN

000323

To shift out of Neutral, the neutral interlock trigger of the remote control lever must first be pulled up.

EMU00100

Neutral Throttle Lever

To open the throttle without shifting into either Forward or Reverse, place the remote control lever in the Neutral position and lift the neutral throttle lever.

NOTE:

The neutral throttle lever will operate only when the remote control lever is in Neutral. The remote control lever will operate only when the neutral throttle lever is in the closed position.

000324

1 Fully open 2 Fully closed

2-4

STARTOFF

701021

EMU00101

Main switch

The main switch controls the ignition system; its operation is described below.

8 OFF

Electrical circuits switched off. (The key can be removed.)

8 ON

Electrical circuits switched on. (The key cannot be removed.)

8 START

STARTOFF

001242

Starter-motor will turn and start engine. (When the key is released, it returns automatically to “ON”.)

2-5

000569

EMU00934

Engine Stop Lanyard Switch

The lock-plate 1 must be attached to the engine stop lanyard switch for the engine to run. The lanyard 2 should be attached to a secure place on the operator’s clothing, or arm or leg. Should the operator fall overboard or leave the helm, the lanyard will pull out the lock plate, stopping ignition to the engine. This will prevent the boat from run-

STARTOFF

000715

ning away under power.

8 Attach the lanyard to a secure place on

your clothing, your arm or leg while operating.

8 Do not attach the lanyard to clothing

that could tear loose. Do not route the lanyard in such a way that it could become entangled, preventing it from functioning.

8 Avoid accidentally pulling the lanyard

during normal operation. Loss of engine power means the loss of most steering control. Also, without engine power, the boat could slow rapidly. This could cause people and objects in the boat to be thrown forward.

NOTE:

The engine cannot be started with the lockplate removed.

2-6

UP DN

701034

UP DN

EMU01112

Power Trim/Tilt Switches

The power trim/tilt adjusts the motor angle in relation to the transom. The power trim/tilt switch is located on the remote control lever grip. Individual-engine switches are also on the control cover. Pushing the switch “UP” trims the motor up, then tilts the motor up. Pressing the switch “DN” tilts the motor down and trims the motor down. When the switch button is released, the motor will stop in its current position.

NOTE:

8 On the dual engine control, the switch on

the remote control grip controls both engines at the same time.

8 Refer to the sections “Adjusting Trim

Angle” and “Tilting Up/Down” in Chapter 3 for instructions on usage.

000921

2-7

001278

35°

701035

EMU00106

Free Accelerator

To open the throttle without shifting into either Forward or Reverse, push the free accelerator button and turn the remote control lever.

NOTE:

8 The free accelerator button can be oper-

ated only when the remote control lever is in the Neutral position.

8 After the button is pushed, the remote

control lever must be moved at least 35° to begin opening the throttle.

8 After operating the free accelerator, return

the remote control lever to the Neutral position. The free accelerator button will return automatically to its set position. The remote control will then engage Forward and Reverse normally.

1 Fully-open 2 Fully-closed 3 Free accelerator

EMU01155

Throttle Friction Adjusting Screw

A friction device in the remote control box provides adjustable resistance to movement of the remote control lever, and can be set according to operator preference. An adjusting screw is located on the front of the remote control box.

702035

Resistance Screw

Increase Turn clockwise

Decrease Turn counterclockwise

Do not overtighten the friction adjusting screw. If there is too much resistance, it may be difficult to move the lever, which could result in an accident.

2-8

603014

EMU01552

TRIM TAB

The trim tab should be adjusted so that the steering control can be turned to either the right or left by applying the same amount of force.

An improperly adjusted trim tab may cause difficult steering. Always test run after the trim tab has been installed or replaced to be sure steering is correct. Be sure you have tightened the bolt after adjusting the trim tab.

1 Trim tab 2 Bolt 3 Cap (if equipped)

Boat tends to veer The fin of trim tab

To the left Turn to the left (port side) (A in the figure)

To the right Turn to the right (starboard side) (B in the figure

)

2-9

The trim tab also serves as an anode to protect the engine from electrochemical corrosion. Never paint the trim tab as it

000625

will become ineffective as an anode.

001570

EMU01563

POWER TRIM/TILT SWITCH

The power trim/tilt adjusts the motor angle in relation to the transom. The power trim/tilt switch is located on the side of the bottom engine cowling. Pushing the switch “UP” trims the motor up, then tilts the motor up. Pressing the switch “DN” tilts the motor down and trims the motor down. When the switch button is released, the motor will stop in its current position.

Use the power trim/tilt switch located on the bottom engine cowling only when the boat is at a complete stop with the engine off. Attempting to use the cowling-mounted power trim/tilt switch while the boat is moving could increase the risk of falling overboard and could distract the operator, increasing the risk of collision with another boat or an obstacle.

NOTE:

Refer to the sections “ADJUSTING TRIM ANGLE” and “TILTING UP/DOWN” for instructions on usage.

2-10

001078

001082

EMU01614

DIGITAL TACHOMETER

This gauge contains the tachometer, trim meter, hour meter, oil level indicator, and the overheat warning indicator.

1 Tachometer 2 Trim meter 3 Hour meter 4 Oil level indicator 5 Overheat warning indicator 6 Set button 7 Mode button

NOTE:

All segments of the display will light momentarily after the main switch is turned on and will return to normal thereafter.

EMU00136

Tachometer

This meter shows the engine speed.

2-11

001049

001050

EMU01689

Trim Meter

This meter shows the trim angle of your outboard motor.

NOTE:

8 Memorize the trim angles that work best

for your boat under different conditions. Adjust the trim angle to the desired setting by operating the power trim and tilt switch.

8 If the trim angle of your motor exceeds

the trim operating range, the top segment on the trim meter display will start to blink.

001087

EMU01687

Hour Meter

This meter shows the number of hours the engine has been run. It can be set to show the total nu0mber of hours or the number of hours for the current trip. The display can also be turned on and off. 8 Changing the display format

Pressing the MODE button changes the display format in the following circular pattern: Total hours - Trip hours - Display off

8 Resetting the trip hours

Simultaneously pressing the SET and MODE buttons for more than 1 second while the trip hours are displayed resets the trip counter to 0 (zero).

NOTE:

The total number of hours the engine has been run cannot be reset.

EMU00138

Oil-Level Indicator

This indicator shows the engine oil level. If the oil level falls below the lower limit, the warning indicator will start to blink. Refer to the sections “FILLING OIL” and “OIL LEVEL WARNING” for details.

001051

1 Oil-level indicator

Do not operate the engine without oil. Serious engine damage will occur.

2-12

000329

TRIP TIME BATT

Km/h knot mph

mile

SPEED

YAMAHA

set

mode

001052

EMU01553

Overheat Warning Indicator

If the engine temperature rises too high, the warning indicator will start to blink. Refer to “OVERHEAT WARNING” for details.

1 Overheat warning indicator

Do not continue to operate the engine if a warning device has activated. If necessary, refer to the “TROUBLESHOOTING” section in this manual. Consult your dealer if the problem cannot be located and corrected.

EMU00140

DIGITAL SPEEDOMETER

This meter contains the speedometer, fuel meter with warning, trip meter, clock and voltmeter with warning.

2-13

1 Speedometer 2 Fuel meter 3 Trip meter/clock/voltmeter 4 Warning indicator

NOTE:

After the main switch is first turned on, all portions of the meter come on as a check. After a few seconds, the meters will change to normal operation. Watch the meter when turning on the main switch to make sure all segments come on.

802034

TRIP TIME BATT

Km/h knot mph

km mile

SPEED

YAMAHA

set

mode

YAMAHA

SPEED

TRIP TIME BATT

set

Km/h knot mph

km mile

mode

000330

000331

EMU00141

Speedometer

This meter shows the boat speed.

NOTE:

The speedometer displays km/h, mph, or knots, depending upon operator preference. Select the desired unit of measurement by setting the selector switch on the back of the meter. See the illustration for settings.

1 Cap 2 Selector switch (for speed unit) 3 Selector switch (for fuel sender)

EMU01274

Trip Meter

This meter displays the distance the boat has traveled since the meter was last reset. Repeatedly push and release the “mode” button until the indicator on the face of the meter points to “TRIP”. To reset the trip meter to “0”, press the “set” and “mode” but- ton together.

NOTE:

8 The trip distance is shown in kilometers

or miles depending upon the unit of measurement selected for the speedometer.

8 The trip distance is kept in memory by

battery power. The stored data will be lost if the battery is disconnected.

2-14

000332

TRIP TIME BATT

Km/h knot mph

km mile

SPEED

YAMAHA

set

mode

802032TRIP TIME BATT

Km/h knot mph

mile

SPEED

EMU01275

Clock

This meter shows the current time. Repeatedly push and release the “mode” button until the indicator on the face of the meter points to “TIME.” To set the clock, be sure the meter is in the “TIME” mode. Press the “set” button; the hour display will begin blinking. Press the “mode” button until the desired hour is displayed. Press the “set” button again, the minute display will begin blinking. Press the “mode” button until the desired minute is displayed. Press the “set” button again to start the clock.

NOTE:

The clock operates on battery power. Disconnecting the battery will stop the clock. Reset the clock after connecting the battery.

EMU01554

Fuel meter

The fuel level is indicated by eight segments. When all segments are showing, the fuel tank is full.

The Yamaha fuel tank sensor differs from conventional sensors. Incorrectly setting the selector switch on the meter will give false readings. Consult your Yamaha dealer on how to correctly set the selector switch.

2-15

NOTE:

The fuel reading can be affected by the position of the sensor in the fuel tank and the attitude of the boat in the water. Operation with bow-up trim or continuous turning can give false readings.

802031

TRIP TIME BATT

Km/h knot mph

km mile

SPEED

YAMAHA

set

mode

YAMAHA

set

mode

P S

mpg

Km/L

gph

I/h

ECON SYNCTTL

FUEL MANAGEMENT

000333

EMU01555

Warning indicators 8 Fuel warning

If the fuel level decreases to one segment the fuel level warning segment 1 will begin blinking.

8 Low battery voltage warning

If battery voltage drops, the display 2 will automatically turn on and begin blinking.

Do not continue to operate the engine if a warning device has activated. Refer to the “Troubleshooting” section in this manual. Consult your Yamaha dealer if the problem cannot be located and corrected.

EMU00146

FUEL MANAGEMENT METER

Optional Equipment

The meter contains the fuel flow meter, fuel consumption meter, fuel economy meter, twin engine speed synchronizer, water separator warning indicator.

FUEL MANAGEMENT

P S

ECON SYNCTTL

I/h gph

Km/L mpg

000334

1 Fuel flow meter 2 Fuel consumption / Fuel economy meter /

Twin engine speed synchronizer

3 Water separator warning indicator (Operates

only if the sensor has been installed.)

NOTE:

2-16

YAMAHA

P S

gph

I/h

ECON SYNCTTL

FUEL MANAGEMENT

set

mode

000335

2 65431

(liter)

l/h

(gallon)

gph

000336

EMU00147

Fuel Flow Meter

The meter displays fuel flow within one hour, at the rate of current engine operation.

If twin engines are installed on your boat, the meter will display total fuel flow of Port and Starboard side engine. It also displays PS indication at the same time. By pressing “set” button, the meter will display fuel flow of starboard side engine and S indication. By pressing “set” button again, the meter will display fuel flow of port side engine and P indication. By pressing “set” button again, the meter will display total fuel flow.

NOTE:

8 The meter displays gallon/hour and liter

depending upon operator preference. Select the desired unit of measurement by setting the selector switch 1 on the back of the meter during installation.

8 Fuel consumption meter and Fuel econo-

my meter will indicate same unit of measurement.

2-17

P S

gph

I/h

ECON SYNCTTL

FUEL MANAGEMENT

000337

P S

gph

I/h

EMU01276

Fuel Consumption Meter

This meter displays the total amount of fuel consumed since the meter was last reset. Repeatedly push and release the “mode” button until the indicator on the face of the meter points to total (“TTL”). To reset the total fuel consumption to “0”, press the “set” and “mode” buttons together.

FUEL MANAGEMENT

Km/L mpg

ECON SYNCTTL

000338

EMU01277

Fuel Economy

This meter displays the distance per liter or gallon when cruising for reference use by the operator. Repeatedly push and release the “mode” button until the indicator on the face of the meter points to “ECON.”

NOTE:

If twin engines are installed on your boat, the meter will display only the total fuel economy of both engines.

2-18

NOTE:

8 Fuel consumption varies greatly with boat

design, weight, propeller used, engine trim angle, sea conditions (including wind), and throttle position. Fuel consumption also varies slightly with the type of water (salt, fresh, and contaminate levels), air temperature and humidity, cleanliness of the boat bottom, engine mounting height, skill of the operator, and individual gasoline formulation (winter or summer fuel and amount of additives).

8 The Yamaha digital speedometer and fuel

management meter calculates speed, miles traveled, and fuel economy by water movement at the stern of the boat. This distance can vary greatly from the actual distance traveled because of water currents, sea swells, and the condition of the water speed sensor (partially plugged or damaged).

8 Individual engines may slightly vary in

their fuel consumption due to manufacturing variations. These variations can be even greater if the engines are of different year models. In addition, variations in propellers, even of the same basic dimensions of the same design, can also cause a slight variation in fuel consumption.

2-19

P S

mpg

Km/L

gph

I/h

ECON SYNCTTL

FUEL MANAGEMENT

000339

P S

FUEL MANAGEMENT

P S

mpg

Km/L

gph

I/h

ECON SYNCTTL

FUEL MANAGEMENT

000341

I/h gph

Km/L mpg

ECON SYNCTTL

q w e

r t

000340

EMU01278

Twin Engine Speed Synchronizer

This meter displays the difference in engine speed (r/min) between the Port and Starboard engines for reference purposes when synchronizing the two engines’ speeds. Repeatedly push and release the “mode” button until the indicator on the face of the meter points to “SYNC”.

1 Port side engine speed is higher 2 Port side engine speed is slightly higher 3 Engine speed is synchronized evenly between

Port and Starboard side engines

4 Starboard side engine speed is slightly higher 5 Starboard side engine speed is higher

NOTE:

If the two engines’ speeds are not synchronized while cruising, they can be synchronized by adjusting trim angle or throttle.

EMU01207

Water Separator Warning Indicator

If the water which has been separated from fuel in the water trap exceeds a specific volume, the indicator will blink showing the need for water to be drained.

NOTE:

This indicator only operates when a water separator sensor is equipped.

2-20

001571

001573

EMU00157

TILT SUPPORT LEVER

To keep the outboard motor in the tilted-up position, lock the tilt support lever to the clamp bracket.

EMU00163

TOP COWLING LOCK LEVERS

To remove the engine top cowling, pull up the front and rear lock levers. Then lift off the cowling. When replacing the cowling, check to be sure it fits properly in the rubber seal. Then lock the cowling again by moving the levers downward.

2-21

001572

EMU01701

FLUSHING DEVICE

This device 1 is used to clean the cooling water passages of the motor using a garden hose and tap water.

NOTE:

Refer to “CLEANING COOLING-WATER PASSAGES” in Chapter 4 for instructions on usage.

701054

703026

OFF START OFF START

ON ON

001053

EMU00169

WARNING SYSTEM

Do not continue to operate the engine if the warning device has activated. Consult your Yamaha dealer if the problem cannot be located and corrected.

EMU01664

OVERHEAT WARNING

This engine has an overheat warning device. If the engine temperature rises too high, the warning device will activate.

Activation of the warning device

8 The engine speed will automatically

decrease to about 2,000 r/min.

8 The overheat warning indicator will come

on.

8 The buzzer will sound.

If the warning system has been activated, stop the engine and check the water inlet for clogging.

NOTE:

In case of dual engine drive; Should the overheat warning system of one engine operate, it slows down and the buzzer sounds. This will cause the other engine to slow down and the buzzer to sound. For the other engine, the warning system can be released by shifting the remote control lever into the neutral.

605015

2-22

001094

ON ON

OFF START OFF START

703026

EMU01886

OIL LEVEL WARNING AND OIL FILTER CLOGGING WARNING

This engine has an oil level warning system. If the oil level falls below the lower limit, the warning system will activate.

Activation of warning device

8 The engine speed will automatically

decrease to about 2,000 r/min.

8 The oil level warning indicator will light. 8 The buzzer will sound.

If the warning system has activated, stop the engine and check for the cause.

NOTE:

The warning for oil filter clogging is similar to the warnings for low oil level and overheating. To make troubleshooting easier, check for engine overheating first, then oil level, and finally oil filter clogging.

1 Oil filter

2-23

001574

001203

701054

ON ON

OFF START OFF START

EMU01907

WATER SEPARATOR WARNING

This engine has a fuel filter water separator system and water separator warning system. If water separated from the fuel exceeds a specific volume, the warning device will activate.

Activation of the warning device

8 The engine speed will automatically

decrease to about 2,000 r/min.

8 The buzzer will sound. If the warning system has activated, stop the engine and inspect the fuel filter.

NOTE:

Refer to the section “INSPECTING FUEL FILTER” for details.

703026

1 Fuel filter cup

001904

2-24

-MEMO-

EMU00174

Chapter 3

OPERATION

INSTALLATION.......................................3-1

Mounting the outboard motor................3-2

BREAKING IN (RUNNING IN)

ENGINE...................................................3-5

PRE-OPERATION CHECKS ...................3-6

Operation after a long period of

storage..................................................3-8

FILLING FUEL AND ENGINE OIL..........3-9

Filling fuel..............................................3-9

Filling oil..............................................3-10

STARTING ENGINE ..............................3-13

WARMING UP ENGINE........................3-16

SHIFTING..............................................3-17

Forward...............................................3-17

Reverse...............................................3-17

STOPPING ENGINE .............................3-18

TRIMMING OUTBOARD MOTOR.........3-19

Adjusting trim angle ............................3-20

TILTING UP/DOWN...............................3-22

CRUISING IN OTHER CONDITIONS ...3-25

Cruising in salt water ..........................3-25

Cruising in turbid water .......................3-25

EMU00175

INSTALLATION

Incorrect engine height or obstructions to smooth water flow (such as the design or condition of the boat or accessories such as transom ladders/depth finder transducers) can create airborne water spray while the boat is cruising. Severe engine damage may result if the motor is operated continuously in the presence of airborne water spray.

NOTE:

During water testing check the buoyancy of the boat, at rest, with its maximum load. Check that the static water level on the exhaust housing is low enough to prevent water entry into the powerhead, when water rises due to waves when the outboard is not running.

3-1

EMU01478

MOUNTING THE OUTBOARD MOTOR

8 Overpowering a boat may cause

severe instability. Do not install an outboard motor with more horsepower than the maximum rating on the capacity plate of the boat. If the boat does not have a capacity plate, consult the boat manufacturer.

8 The information presented in this sec-

tion is intended as reference only. It is not possible to provide complete instructions for every possible boat/motor combination. Proper mounting depends in part on experience and the specific boat/motor combination.

Improper mounting of the outboard motor could result in hazardous conditions such as poor handling, loss of control, or fire hazards. Observe the following: 8 For permanently mounted models,

your dealer or other person experienced in proper rigging should mount the motor. If you are mounting the motor yourself, you should be trained by an experienced person.

8 For portable models, your dealer or

other person experienced in proper outboard motor mounting should show you how to mount your motor.

3-2

104016

Mount the outboard motor on the center line (keel line) of the boat, and ensure that the boat itself is well balanced. Otherwise, the boat will be hard to steer. For boats without a keel or which are asymmetrical, consult your dealer.

1 Center line (keel line)

000371

EMU01566*

Mounting Height

To run your boat at optimum efficiency, the water resistance (drag) of the boat and outboard motor must be made as little as possible. The mounting height of the outboard motor greatly affects the water resistance. If the mounting height is too high, cavitation tends to occur, thus reducing the propulsion and causing the engine to overheat. If the mounting height is too low, the water resistance will increase and thereby reduce engine efficiency.

3-3

104014

130mm ( 5 in.)

104025

Z250, LZ250

Mount the outboard motor so that the anticavitation plate is in alignment with the bottom of the boat.

VZ225, VZ250

Mount the outboard motor so that the anticavitation plate is about 130 mm (5 in.) above the bottom of the boat.

NOTE:

8 The optimum mounting height of the

outboard motor is affected by the boat and motor combination and the desired use. Test runs at different heights can help determine the optimum mounting height. Consult your Yamaha dealer or boat manufacturer for further information on determining the proper mounting height.

8 For instructions on setting the trim

angle of the outboard motor, see “Trimming outboard motor” in this chapter.

3-4

000106

Do not use fuel mixed with oil during break-in or under any circumstances.

EMU01494

BREAKING IN (RUNNING IN)

ENGINE

Your new engine requires a period of breakin (running-in) to allow mating surfaces of moving parts to wear-in evenly. Correct break-in (running-in) will help ensure proper performance and longer engine life.

8 Failure to follow the break-in (running-

in) procedure may result in reduced engine life or even severe engine damage.

8 Do not use pre-mixed fuel in this

engine as it may cause carbon deposits on the fuel injector thereby causing engine trouble.

8 Follow the instructions for breaking-

in/running-in carefully.

3-5

Break-in (running-in) time:10 hours

NOTE:

The label pictured at left is to be left on the top cowling until the break-in (running-in) procedure has been completed and may be removed afterwards.

EMU01195

Run the engine under load (in gear with a propeller installed) as follows.

1) First 10 minutes: Run the engine at the lowest possiblespeed. A fast idle in neutral is best.

2) Next 50 minutes: Do not exceed half throttle (approximately 3,000 r/min). Vary engine speed occasionally. If you have an easy-planing boat, accelerate at full throttle onto plane, then immediately reduce the throttle to 3,000 r/min or less.

3) Second hour: Accelerate at full throttle onto plane, then reduce engine speed to threequarter throttle (approximately 4,000 r/min). Vary engine speed occasionally. Run at full throttle for one minute, then allow about 10 minutes of operation at three-quarter throttle or less to let the engine cool.

4) Third through tenth hours: Avoid operating at full throttle for more than 5 minutes at a time. Let the engine cool between full-throttle runs. Vary engine speed occasionally.

5) After the first 10 hours: Operate the engine normally.

EMU00204

PRE-OPERATION CHECKS

If any item in the pre-operation check is not working properly, have it inspected and repaired before operating the outboard motor. Otherwise, an accident could occur.

Do not start the engine out of water. Overheating and serious engine damage can occur.

3-6

EMU01655

Fuel

8 Check to be sure you have plenty of fuel

for your trip.

8 Make sure there are no fuel leaks or

gasoline fumes.

8 Check fuel line connections to be sure

they are tight.

8 Be sure that the fuel hose is not twisted

or flattened, or likely to contact sharp objects.

EMU00207

Oil

8 Check to be sure you have plenty of oil for

your trip.

EMU00209

Controls

8 Check throttle, shift, and steering for

proper operation before starting the engine.

8 The controls should work smoothly, with-

out binding or unusual free play.

8 Look for loose or damaged connections. 8 Check operation of the starter and stop

switches when the outboard motor is in the water.

3-7

EMU00211

Engine

8 Check the engine and engine mounting. 8 Look for loose or damaged fasteners. 8 Check the propeller for damage. 8 Check that the battery is in good condi-

tion and battery connections are secure.

001576

EMU01794

OPERATION AFTER A LONG PERIOD OF STORAGE

When operating the engine after a long period (12 months) of storage, proceed as follows:

1) Start the engine. Leave it idling.

8 Do not touch or remove electrical

parts when starting or during operation.

8 Keep hands, hair, and clothes away

from the flywheel and other rotating parts while the engine is running.

2) Watch for oil flowing through the oil feed pipes. After any air in the oil lines has been expelled, the oil injection system should supply oil normally. If no oil is flowing after 10 minutes of idling, consult your Yamaha dealer.

8 Be sure to take the above steps when

operating the engine after a long period of storage. Otherwise engine seizure could occur.

8 Use straight gasoline only. If premix

fuel is used, the fuel injector could be damaged.

001577

3-8

EMU00186

FILLING FUEL AND ENGINE

OIL

EMU01699

FILLING FUEL

1) Remove the fuel tank cap.

2) Fill the fuel tank carefully.

3) Close the cap securely after refueling. Wipe up any spilled fuel.

EMU01019

Ring Free Fuel Additive

Gasoline is a precise blend of many different substances, each chosen to give certain characteristics. Gasoline blends have been changing in recent years in response to concerns about pollution and resulting emissions regulations. One of the most obvious changes has been the elimination of lead from most fuels.

3-9

As gasoline has changed, the amount of additives such as aromatics and oxygenates has increased. These additives are important for the engines in passenger cars, but they can have detrimental effects in marine engines, because of increased deposits in the combustion chamber. When enough deposits collect, piston rings begin sticking. Performance drops and engine wear increases dramatically.

While many additives available may reduce deposits, Yamaha recommends the use of Ring Free Fuel Additive, available from your Yamaha dealer. Ring Free has repeatedly proven its ability to clean combustion deposits from inside the engine, notably the critical piston-ring-land area, and fuel system components. Follow product labeling for use instructions.

EMU01801

FILLING OIL

This engine uses the oil injection system, which provides superior lubrication by ensuring the proper oil ratio for all operating conditions. No fuel premixing is needed. Simply pour gasoline into the fuel tank and oil into the oil tank. Convenient indicator segments indicate the status of the oil supply. For details on reading the indicator segments, see “Oil level indicator” in this chapter. To fill the engine oil tank, proceed as follows:

Do not add gasoline into the oil tank. Fire or explosion could result.

Engine oil tank capacity:

See Chapter 4, “Specifications.”

3-10

001475

EMU01825

Using remote oil tank

1) Pour engine oil into the remote oil tank.

NOTE:

The oil level lines on the remote oil tank indicate the amount of additional oil that can be added to the tank. The top oil level line indicates approximately 1.9 L (0.5 US gal,

0.4 Imp gal) can be added, and the bottom

oil level line indicates approximately 3.8 L (1 US gal, 0.8 Imp gal) can be added.

2) Turn on the main switch. The oil injec-

ON STARTOFF

tion system will automatically feed oil from the remote oil tank to the engine oil tank.

3) Operate the engine normally.

701024

When the engine is operated for the first time or stored for a period of time, a minimum of 5 liters (5.3 US qt, 4.4 Imp qt) of oil should be kept in the remote oil tank. Otherwise the oil-feed pump chamber will not be filled with oil, and no oil will be supplied.

3-11

EMU01543

Oil Level Indicator

The various oil level system functions are as follows:

Oil level indica-

tor (Digital

tachometer)

Oil level indica-

tor (Analog

tachometer)

Green

Yellow

Red Yellow Green

Engine oil

tank

More than

300 cm (0.32 US qt,

0.26 Imp qt)

More than

300 cm (0.32 US qt,

0.26 Imp qt)

300 cm (0.32 US qt,

0.26 Imp qt) or less

Remote oil

tank

More than 1,500 cm

(1.6 US qt,

1.31 Imp qt)

1,500 cm

(1.6 US qt,

1.31 Imp qt) or less

More than 1,500 cm

(1.6 US qt,

1.31 Imp qt)

Remarks

• No refilling necessary.

• Add oil, refer to “FILLING OIL.”

• Check oil filter for clogging.

• Check battery cable con-

nection.

• Buzzer will sound.

• Engine speed is automati-

cally reduced to about 2,000 r/min.

Red

300 cm (0.32 US qt,

0.26 Imp qt) or less

1,500 cm

(1.6 US qt,

1.31 Imp qt) or less

• Oil has not been added.

• Buzzer will sound.

• Engine speed is automati-

cally reduced to about 2,000 r/min.

• Refer to Chapter 5.

3-12

001671

EMU01688

STARTING ENGINE

8 Before starting the engine, make sure

that the boat is tightly moored and that you can steer clear of any obstructions. Be sure there are no swimmers in the water near you.

8 When the air vent screw is loosened,

gasoline (petrol) vapor will be released. Gasoline (petrol) is highly flammable, and its vapors are flammable and explosive. Refrain from smoking, and keep away from open flames and sparks while loosening the air vent screw.

8 This product emits exhaust gases

which contain carbon monoxide, a colorless, odorless gas which may cause brain damage or death when inhaled. Symptoms include nausea, dizziness, and drowsiness. Keep cockpit and cabin areas well ventilated. Avoid blocking exhaust outlets.

3-13

1) If there is an air vent screw on the fuel tank cap, loosen it 2 or 3 turns.

2) If there is a fuel joint or a fuel cock on the boat, firmly connect the fuel line to the joint or open the fuel cock.

3) Squeeze the primer bulb with the outlet end up until you feel it become firm.

701015

EMU00248

PROCEDURE FOR REMOTE CONTROL MODELS

4) Place the remote control lever in the Neutral position.

NOTE:

The start-in-gear protection device permits the engine to be started only when it is in Neutral.

702025

5) Attach the engine stop switch lanyard to a secure place on your clothing, or your arm or leg. Then, install the lock plate on the other end of the lanyard in the engine stop switch.

8 Attach the engine stop switch lanyard

to a secure place on your clothing,

000293

STARTOFF

000714

your arm or leg while operating.

8 Do not attach the lanyard to clothing

that could tear loose. Do not route the lanyard where it could become entangled, preventing it from functioning.

8 Avoid accidentally pulling the lanyard

3-14

OFF

000977

OFF

OFF START

START

701022

703045

6) Turn the main switch to “ON”.

NOTE:

In case of dual-engine operation, when the main switch is turned on, the buzzer operates for a few seconds and stops automatically. Should either of the dual engines stall, the buzzer operates.

EMU00949

Electric Start Model

7) Turn the main switch to “START”, and hold it for a maximum of 5 seconds.

8) Immediately after the engine starts, release the main switch to return it to “ON”.

8 Do not turn the main switch to

“START” when the engine is running.

8 Do not keep the starter-motor turning

for more than 5 seconds. The battery will rapidly become exhausted and it will be impossible for it to start the engine. If the engine does not start within 5 seconds, return the main switch to “ON”, wait 10 seconds, and then crank the engine again.

3-15

309034

EMU01198

WARMING UP ENGINE

1) Before beginning operation, allow the engine to warm up at idling speed for 3 minutes. (Failure to do this will shorten engine life.)

2) Check for a steady flow of water from the cooling-water pilot hole.

A continuous flow of water from the pilot hole shows that the water pump is pumping water through the cooling passages. If water is not flowing out of the pilot hole at all times while the engine is running, do not continue to run the engine. Overheating and serious damage could occur. Stop the engine and check to see if the water inlet on the lower casing is blocked. If the problem cannot be found and corrected, consult your Yamaha dealer.

3-16

701043

EMU00261

SHIFTING

Before shifting, make sure there are no swimmers or obstacles in the water near you.

To change the shifting position from for-

ward to reverse or vice-versa, close the throttle first so that the engine idles (or runs at low speeds).

EMU00264

FORWARD

Pull up the neutral interlock trigger (if

702015

equipped) and move the remote control lever quickly and firmly from Neutral to Forward.

EMU00269

REVERSE

When operating in reverse, go slowly. Do not open the throttle more than half. Otherwise, the boat may become unsta-

701044

ble, which could result in loss of control and an accident.

3-17

Pull up the neutral interlock trigger (if equipped) and move the remote control lever quickly and firmly from Neutral to Reverse.

702016

START

OFF

701023

OFF

EMU00273

STOPPING ENGINE

Let it cool off for a few minutes at idle or low speed first. Stopping the engine immediately after operating at high speed is not recommended.

EMU01199

1) Turn the main switch to “OFF”.

2) If there is a fuel joint or a fuel cock on the boat, disconnect the fuel line or close the fuel cock after stopping the engine.

3) Tighten the air vent screw on the fuel tank cap after stopping the engine, if it is equipped.

4) Remove the key if the boat will be left unattended.

NOTE:

The engine can also be stopped by pulling the lanyard and removing the lock plate from the engine stop lanyard switch (then turning the main switch to “OFF”).

703046

3-18

001594

EMU01412

TRIMMING OUTBOARD

MOTOR

The trim angle of the outboard motor helps determine the position of the bow of the boat in the water. The correct trim angle will help improve performance and fuel economy while reducing strain on the engine. The correct trim angle depends upon the combination of boat, engine, and propeller. Correct trim is also affected by variables such as the load in the boat, sea conditions, and running speed.

Excessive trim for the operating conditions (either trim up or trim down) can cause boat instability and can make steering the boat more difficult. This increases the possibility of an accident. If the boat begins to feel unstable or is hard to steer, slow down and/or readjust the trim angle.

3-19

NOTE:

Refer to the section “ADJUSTING TRIM ANGLE” for instructions on usage.

1 Trim operating angle

UP DN

000350

UP DN

ADJUSTING TRIM ANGLE

EMU01657

Power Trim/Tilt Models

8 Be sure all people are clear of the out-

board motor when adjusting the trim/tilt angle, also be careful not to pinch any body parts between the drive unit and clamp bracket.

8 Use caution when trying a trim posi-

tion for the first time. Increase speed gradually and watch for any signs of instability or control problems.

8 Use the power trim/tilt switch located

on the bottom engine cowling (if equipped) only when the boat is at a complete stop with the engine off.

The outboard motor trim angle can be adjusted operating the power trim/tilt switch

To raise the bow (“trim-out”), push the switch UP.

To lower the bow (“trim-in”), push the switch DN.

000351

Make test runs with the trim set to different angles to find the position that works best for your boat and operating conditions.

NOTE:

To adjust the trim angle while the boat is moving, use the power trim and tilt switch located on the remote control box.

3-20

001672

EMU01916

Trim angle settings and boat handling

When the boat is on plane, a bow-up attitude results in less drag, greater stability and efficiency. This is generally when the keel line of the boat is up about 3 to 5 degrees. With the bow up, the boat may have a greater tendency to steer to one side or the other. Compensate for this as you steer. The trim tab can also be adjusted to help offset this effect.

001673

001674

1 Optimum angle (level keel line) 2 Bow up 3 Bow down

Bow Up

Too much trim-out puts the bow of the boat too high in the water. Performance and economy are decreased because the hull of the boat is pushing the water and there is more air drag. Excessive trim-out can also cause the propeller to ventilate, which reduces performance further, and the boat may “porpoise” (hop in the water), which could throw the operator and passengers overboard.

Bow Down

When the bow of the boat is down, it is easier to accelerate from a standing start onto plane. Too much trim-in causes the boat to “plow” through the water, decreasing fuel economy and making it hard to increase speed. Operating with excessive trim-in at higher speeds also makes the boat unstable. Resistance at the bow is greatly increased, heightening the danger of “bow steering” and making operation difficult and dangerous.

3-21

001596

NOTE:

Depending on the type of boat, the outboard motor trim angle may have little effect on the trim of the boat when operating.

EMU01200

TILTING UP/DOWN

If the engine will be stopped for some time, or if the boat is moored in shallows, the engine should be tilted up to protect the propeller and casing from damage by collision with obstructions, and also to reduce salt corrosion.

Before tilting the motor, follow the procedures under “STOPPING ENGINE”.Never tilt the motor while the engine is running. Severe damage from overheating can result.

Be sure all people are clear of the outboard motor when adjusting the tilt angle, also be careful not to pinch any body parts between the drive unit and engine bracket.

Leaking fuel is a fire hazard. Disconnect the fuel line or close the fuel cock if the engine will be tilted for more than a few minutes. Otherwise, fuel may leak. (If the fuel connector is provided on the motor.)

3-22

001570

EMU01575

PROCEDURE FOR TILTING UP

Power trim and tilt models

1) Disconnect the fuel line or close the fuel cock.

2) Push the power trim and tilt switch “UP” until the outboard has tilted up completely.

UP DN

701034

000328

3) Turn the tilt support lever toward you to support the engine.

8 After tilting the engine, be sure to sup-

port it with the tilt support lever. Otherwise, the engine could fall back down suddenly if oil in the power trim and tilt unit should lose pressure.

8 Never operate the engine while it is

supported by the tilt support lever.

3-23

EMU01576

4) Once the engine is supported with the tilt support lever, push the power trim and tilt switch “DN” (down) to retract the trim rods.

Be sure to retract the trim rods completely during mooring. This protects the rods from marine growths and corrosion which could damage the power trim and tilt mechanism.

EMU00303

PROCEDURE FOR TILTING DOWN

Power trim/tilt model

1) Push the power trim/tilt switch “UP” until the engine is supported by the tilt rod.

2) Release the tilt-support lever.

3) Push the power trim/tilt switch “DN” (Down) to lower the engine to the desired position.

3-24

EMU00316

CRUISING IN OTHER

CONDITIONS

CRUISING IN SALT WATER

After operating in salt water, wash out the cooling-water passages with fresh water to prevent them from becoming clogged-up with salt deposits.

NOTE:

Refer to cooling system flushing instructions in “TRANSPORTING AND STORING OUTBOARD MOTOR”.

CRUISING IN TURBID WATER

It is strongly recommended that the optional chromium-plated water-pump kit be installed if the outboard is to be used in turbid (muddy) water conditions.

3-25

EMU00317

Chapter 4

MAINTENANCE

SPECIFICATIONS ...................................4-1

TRANSPORTING AND STORING

OUTBOARD MOTOR................................4-3

Trailering outboard motor......................4-3

Storing outboard motor .........................4-4

PERIODIC MAINTENANCE....................4-8

Replacement parts ...............................4-8

Maintenance chart ................................4-9

Greasing .............................................4-10

Cleaning and adjusting spark plug .....4-11

Checking fuel system..........................4-13

Inspecting fuel filter.............................4-14

Inspecting idling speed .......................4-15

Checking water in engine oil tank .......4-16

Checking wiring and connectors.........4-17

Exhaust leakage .................................4-17

Water leakage.....................................4-17

Checking power trim and tilt system ...4-18

Checking propeller..............................4-19

Changing gear oil................................4-21

Inspecting and replacing anode(s)......4-22

Checking battery.................................4-23

Cleaning cooling-water passages.......4-27

Checking top cowling..........................4-28

Motor exterior......................................4-28

Coating the boat bottom .....................4-28

EMU01866

SPECIFICATIONS

Model

Item

DIMENSIONS

Overall length mm (in.) Overall width mm (in.) Overall height L/X/U mm (in.) Transom height L/X/U mm (in.) Weight* L/X/U kg (lb.)

PERFORMANCE

Full throttle operating range r/min Maximum output kW (HP) @ r/min Idling speed (in neutral) r/min

ENGINE

Type

Displacement cm

Bore × stroke mm (in.) Ignition system Spark plug NGK

Spark plug gap mm (in.) Control system Starting system Battery

Min. cold cranking amps (CCA/SAE) amps at -18°C (-0.4°F)

Min. marine cranking amps (MCA/ABYC) amps at 0°C (32°F)

Min. reserve capacity (RC/SAE) minutes Alternator output V-A (W) Starting carburetion system

DRIVE UNIT

Gear positions

Gear ratio Trim and tilt system Propeller mark

FUEL AND OIL

Recommended fuel

Fuel tank capacity L (US gal, Imp gal) Recommended engine oil

Lubrication

Engine oil capacity (engine oil tank) L (US qt, Imp qt)

(remote oil tank) L (US qt, Imp qt)

Recommended gear oil

Gear oil capacity cm

TIGHTENING TORQUE

Spark plug N·m (kgf·m, lb·ft) Propeller nut N·m (kgf·m, lb·ft)

Unit VZ225TRC

(cu.in.)

P.O.N.

(US oz, Imp oz)

* Listed weight does not include propeller.

906 (35.7) 568 (22.4) 1,714 (67.5) / — / — 493 (19.4) / — / — 245 (540) / — / —

4,500–5,500

165.5 (225) @ 5,000 700–760

2-stroke, V6 3,342 (203.9)

93.0 × 82.0 (3.66 × 3.23) TCI system BKR6EKU

1.5–1.6 (0.059–0.062) Remote control Electric start

512 675 182 12-50 Electronic fuel injection

Forward-Neutral-Reverse

1.75 (28/16) Power trim and tilt T

Regular unleaded gasoline Minimum 86 — Yamalube 2-M outboard oil or another outboard motor manufacturer’s factorybrand oil with TC-W3 rating oil injection system

1.2 (1.3, 1.1)

10.5 (11.1, 9.2) Hypoid gear oil (SAE90) 1,000 (33.8, 35.2)

25 (2.55, 18.44) 54 (5.51, 39.83)

4-1

Z250TRC LZ250TRC VZ250TRC

868 (34.2) 568 (22.4) — / 1,830 (72.0) / 1,957 (77.0) — / 641 (25.2) / 768 (30.2) — / 247 (545) / 252 (556)

4,500–5,500

183.9 (250) @ 5,000 670–730

2-stroke, V6 3,342 (203.9)

93.0 × 82.0 (3.66 × 3.23) TCI system BKR6EKU

1.5–1.6 (0.059–0.062) Remote control Electric start

512 675 182 12-50 Electronic fuel injection

Forward-Neutral-Reverse

1.81 (29/16) Power trim and tilt T, M

Regular unleaded gasoline Minimum 86 — Yamalube 2-M outboard oil or another outboard motor manufacturer’s factorybrand oil with TC-W3 rating oil injection system

1.2 (1.3, 1.1)

10.5 (11.1, 9.2) Hypoid gear oil (SAE90) 1,150 (38.9, 40.5)

868 (34.2) 568 (22.4) — / 1,830 (72.0) / 1,957 (77.0) — / 641 (25.2) / 768 (30.2) — / 247 (545) / 252 (556)

4,500–5,500

183.9 (250) @ 5,000 670–730

2-stroke, V6 3,342 (203.9)

93.0 × 82.0 (3.66 × 3.23) TCI system BKR6EKU

1.5–1.6 (0.059–0.062) Remote control Electric start

512 675 182 12-50 Electronic fuel injection

Forward-Neutral-Reverse

1.81 (29/16) Power trim and tilt TL, ML

Regular unleaded gasoline Minimum 86 — Yamalube 2-M outboard oil or another outboard motor manufacturer’s factorybrand oil with TC-W3 rating oil injection system

1.2 (1.3, 1.1)

10.5 (11.1, 9.2) Hypoid gear oil (SAE90) 1,000 (33.8, 35.2)

906 (35.7) 568 (22.4) 1,714 (67.5) / — / — 493 (19.4) / — / — 245 (540) / — / —

4,500–5,500

183.9 (250) @ 5,000 700–760

2-stroke, V6 3,342 (203.9)

93.0 × 82.0 (3.66 × 3.23) TCI system BKR6EKU

1.5–1.6 (0.059–0.062) Remote control Electric start

512 675 182 12-50 Electronic fuel injection

Forward-Neutral-Reverse

1.75 (28/16) Power trim and tilt T

Regular unleaded gasoline Minimum 86 — Yamalube 2-M outboard oil or another outboard motor manufacturer’s factorybrand oil with TC-W3 rating oil injection system

1.2 (1.3, 1.1)

10.5 (11.1, 9.2) Hypoid gear oil (SAE90) 1,000 (33.8, 35.2)

25 (2.55, 18.44) 54 (5.51, 39.83)

4-2

001590

EMU01369

TRANSPORTING AND

STORING OUTBOARD MOTOR

Leaking fuel is a fire hazard. When transporting and storing the outboard motor, close the air vent screw and fuel cock to prevent fuel from leaking.

EMU00326

TRAILERING OUTBOARD MOTOR

The motor should be trailered and stored in the normal running position. If there is insufficient road clearance in this position, then trailer the motor in the tilt position using a motor support device such as a transom saver bar. For further details, consult your Yamaha dealer.

8 Never get under the lower unit while it

is tilted, even if a motor support bar is used. Severe injury could occur if the outboard accidentally falls.

8 USE CARE when transporting fuel

tank, whether in a boat or car.

8 DO NOT fill fuel container to maximum

capacity. Gasoline will expand considerably as it warms up and can build up pressure in the fuel container.This can cause fuel leakage and a potential fire hazard.

4-3

Do not use the tilt support lever/knob when trailering the boat. The outboard motor could shake loose from the tilt support and fall. If the motor can not be trailered in the down position, use an additional support device to secure it in the up position.

102074

EMU01908

STORING OUTBOARD MOTOR

When storing your Yamaha outboard motor for prolonged periods of time (2 months or longer), several important procedures must be performed to prevent expensive damage. This is especially important for your oil injection-equipped outboard motor due to the lean oil ratios used at idle prior to shutting the engine off for the season. It is advisable to have your outboard motor serviced by an authorized Yamaha dealer prior to storage. However, the following procedures can be performed by you, the owner, with a minimum of tools.

Do not use any chemical goods containing Silicon, Phosphorus, or Lead. Consult your Yamaha dealer for details on the use of chemical goods for storage.

EMU03350

Filling Fuel Tank

Fill the fuel tank with fresh fuel and add one ounce of “Yamaha Fuel Conditioner and Stabilizer” (Part No. LUB-FUELC-12-00) to each gallon of fuel.

NOTE:

The use of “Yamaha Fuel Conditioner and Stabilizer” eliminates the need to drain the fuel system. Consult your Yamaha dealer or other qualified mechanic if the fuel system is to be drained instead.

4-4

903021

Z250, LZ250

EMU00338

Flushing Cooling System and Fogging Engine

Cooling system flushing is essential to prevent the cooling system from clogging up with salt, sand, or dirt. In addition, fogging of the engine is mandatory to prevent expensive engine damage due to rust. Perform the flushing and fogging at the same time.

8 Do not touch or remove electrical

parts when starting or during operation.

8 Keep hands, hair and clothes away

from flywheel and other rotating parts while engine is running.

EMU01544

Flushing with the Flushing Attachment

Avoid running the outboard at high speed while on the flushing attachment, or overheating could occur.

Z250, LZ250

4-5

605014

1) Remove the top cowling and silencer cover. Remove the propeller.

2) Install a flushing attachment to the lower unit. (A flushing attachment is available from a Yamaha dealer).

3) Run the engine at a fast idle for 10-15 minutes while supplying water.

4) Just prior to turning off the engine, quickly spray “Yamaha Stor-Rite Engine Fogging Oil” (Part No. LUB-STRRT-12-

00) alternately into each intake manifold. When properly done, the engine will smoke excessively and almost stall.

5) Remove the flushing attachment and wipe off any excess water.

6) Install the silencer cover and top cowling. Install the propeller.

EMU01568

Lubrication

1) Remove the spark plug(s). Spray “Yamaha Stor-Rite Engine Fogging Oil” into each cylinder for 5 seconds. Grease the spark plug threads and reinstall the spark plug(s) and torque to proper specification. (Refer to the section “CLEANING AND ADJUSTING SPARK PLUG” for details).

2) Turn the engine over with the stop lanyard disconnected to work the fogging oil into the piston rings.

3) Fill the oil tanks. This prevents the formation of condensation. For models with a remote tank, it may be necessary to manually override the control unit to completely fill the engine main tank. (Refer to the section “FILLING OIL” for details).

4) Change the gear-case oil. (Refer to the section “CHANGING GEAR OIL” for details). Inspect the oil for the presence of water which indicates a leaky seal. Seal replacement should be performed by an authorized Yamaha dealership prior to use.

5) Grease all grease fittings. (Refer to the section “GREASING” for details).

EMU01904

Cleaning and Anti-corrosion Measure

1) Wash down the exterior of the outboard with fresh water and dry off completely.

2) Spray the engine’s exterior with “Yamaha Silicone Protectant” (Part No. LUB-SILCNE-13-00).

Do not spray when the engine is running. Also, do not spray near the silencer or into the engine.

3) Wax the cowling with a non-abrasive wax such as “Yamaha Silicone Wax” (Part No. ACC-11000-15-02).

4-6

901015

UPPER LEVEL

LOWER LEVEL

EMU01545

Battery Care

Battery electrolyte is poisonous and dangerous, causing severe burns, etc. It contains sulfuric acid. Avoid contact with skin, eyes, or clothing. Antidote: EXTERNAL: Flush with water. INTERNAL: Drink large quantities of water or milk. Follow with milk of magnesia, beaten egg, or vegetable oil. Call physician immediately. EYES: Flush with water for 15 minutes and get prompt medical attention. Batteries produce explosive gases: Keep sparks, flame, cigarettes, etc. away. Ventilate when charging or using in a closed space. Always wear eye protection when working near batteries. KEEP OUT OF REACH OF CHILDREN.

4-7

Batteries vary among manufacturers. Therefore the following procedures may not always apply. Consult your battery manufacturer’s instructions.

1) Disconnect and remove the battery from the boat. Always disconnect the black negative lead first to prevent the risk of shorting.

2) Clean the battery casing and terminals. Fill each cell to the upper level with distilled water.

3) Store the battery on a level surface in a cool, dry, well-ventilated place out of direct sunlight.

4) Once a month, check the specific gravity of the electrolyte and recharge as required to prolong battery life.

EMU01569

PERIODIC MAINTENANCE

Be sure to turn off the engine when you perform maintenance unless otherwise specified. If the owner is not familiar with machine servicing, this work should be done by a Yamaha dealer or other qualified mechanic.

Maintenance, replacement, or repair of the emission control devices and systems may be performed by any marine engine repair establishment or individual. All warranty repairs, however, including those to the emission control system, must be performed by an authorized Yamaha marine dealership.

A service manual is available for purchase through a Yamaha dealer for owners who have the mechanical skills, tools, and other equipment necessary to perform maintenance not covered by this owner’s manual.

EMU00356

REPLACEMENT PARTS

If replacement parts are necessary, use only genuine Yamaha parts or equivalents of the same type and of equivalent strength and materials. Any part of inferior quality may malfunction, and the resulting loss of control could endanger the operator and passengers. Yamaha genuine parts and accessories are available from a Yamaha dealer.

4-8

10 hours 50 hours 100 hours 200 hours

(1 month) (3 months) (6 months) (1 year)

Spark plug(s)

Cleaning / adjustment / replacement

●●●

Greasing points Greasing ●

Gear oil Change ●●

Fuel system Inspection ●●●

Fuel filter (can be disassembled)

Inspection / cleaning ●●●

Fuel tank (Yamaha portable tank)

Inspection / cleaning ●

High pressure fuel pump drive belt

Inspection / replacement

High pressure fuel pump oil level

Inspection / filling

Idling speed (EFI, HPDI models)

Inspection / adjustment

Anode(s) (external) Inspection / replacement ●/1 ●/1

Anode(s) (internal) Inspection / replacement

Cooling water passages Cleaning ●●

Propeller and cotter pin Inspection / replacement ●●

Battery Inspection / charging ●/1

Throttle link / throttle cable / throttle pick-up timing

Inspection / adjustment

Shift link / shift cable Inspection / adjustment

Throttle position sensor Inspection / adjustment

Oil tank water drain Inspection / cleaning ●/1 ●/1 ● /1

Oil pump Inspection / adjustment

Thermostat Inspection

PCV (Pressure Control Valve)

Inspection

Power trim and tilt unit Inspection

Water pump Inspection

Cowling clamp Inspection ●

Actions

Item Initial

Every

EMU19500

MAINTENANCE CHART

Frequency of maintenance operations may be adjusted according to the operating conditions, but the following table gives general guidelines. Refer to the sections in this chapter for explanations of each owner-specific action. The mark (●) indicates the check-ups which you may carry out yourself. The mark (1) indicates work to be carried out by your Yamaha dealer.

NOTE:

When operating in salt water, turbid or muddy water, the engine should be flushed with clean water after each use.

4-9

EMU00366

001599

500 hours 1000 hours

(2.5 years) (5 years)

High pressure fuel pump drive belt

Replacement

Actions

Item

Every

GREASING

Yamaha marine grease (Water resistant grease)

4-10

EMU01202

CLEANING AND ADJUSTING SPARK PLUG

When removing or installing a spark plug, be careful not to damage the insulator. A damaged insulator could allow external sparks, which could lead to explosion or fire.

The spark plug is an important engine component and is easy to inspect. The condition of the spark plug can indicate something about the condition of the engine. For example, if the center electrode porcelain is very white, this could indicate an intake air leak or carburetion problem in that cylinder. Do not attempt to diagnose any problems yourself. Instead, take the outboard motor to a Yamaha dealer. You should periodically remove and inspect the spark plug because heat and deposits will cause the spark plug to slowly break down and erode. If electrode erosion becomes excessive, or if carbon and other deposits are excessive, you should replace the spark plug with another of the correct type.

4-11

Standard spark plug:

Refer to “SPECIFICATIONS”, page 4-1.

Before fitting the spark plug, measure the electrode gap with a wire thickness gauge; adjust the gap to specification if necessary.

Spark plug gap:

Refer to “SPECIFICATIONS”, page 4-1.

000790

When fitting the plug, always clean the gasket surface and use a new gasket. Wipe off any dirt from the threads and screw in the spark plug to the correct torque.

Spark plug torque:

Refer to “SPECIFICATIONS”, page 4-1.

NOTE:

If a torque-wrench is not available when you are fitting a spark plug, a good estimate of the correct torque is 1/4 to 1/2 a turn past finger-tight. Have the spark plug adjusted to the correct torque as soon as possible with a torque-wrench.

Initial of spark

plug I.D. mark

B 21 mm (13/16 in.)

C/BK 16 mm (5/8 in.)

D 18.3 mm (23/32 in.)

1 Spark plug gap 2 Spark plug I.D. mark (NGK)

Plug wrench size

4-12

001587

EMU01509

CHECKING FUEL SYSTEM

Gasoline (petrol) and its vapors are highly flammable and explosive. Keep away from sparks, cigarettes, flames or other sources of ignition.

Check the fuel line for leaks, cracks, or malfunctions. If any problem is found, it should be repaired immediately by Yamaha dealer or other qualified mechanic.

Checkpoints

8 Fuel system parts leakage. 8 Fuel hose joint leakage. 8 Fuel hose cracks or other damage. 8 Fuel connector leakage.

Leaking fuel can result in fire or explosion.

8 Check for fuel leakage regularly. 8 If any fuel leakage is found, the fuel

system must be repaired by a qualified mechanic. Improper repairs can make the outboard unsafe to operate.

4-13

001588

001903

EMU00370

INSPECTING FUEL FILTER

Gasoline (petrol) is highly flammable, and its vapors are flammable and explosive. 8 If you have any question about proper-

ly doing this procedure, consult your Yamaha dealer.

8 Do not perform this procedure on a hot

or running engine. Allow the engine to cool.

8 There will be fuel in the fuel filter. Keep

away from sparks, cigarettes, flames or other sources of ignition.

8 This procedure will allow some fuel to

spill. Catch fuel in a rag. Wipe up any spilled fuel immediately.

8 The fuel filter must be reassembled

carefully with O-ring, filter cup, and hoses in place. Improper assembly or replacement can result in a fuel leak, which could result in a fire or explosion hazard.

001578

EMU19920

NOTE:

If any water is in the fuel, the float 7 will rise. If so, remove the cup and drain the water.

1) Lift up and hold the spring 1 to loosen the filter cup ring nut 2.

2) Remove the filter cup 3, catching any spilled fuel in a rag.

3) Remove the filter element 4, and wash it in solvent. Allow it to dry. Inspect the filter element and O-ring 5 to make sure they are in good condition. Replace them if necessary. If any water is found in the fuel, the Yamaha portable fuel tank or other fuel tanks should be checked and cleaned.

4-14

4) Reinstall the filter element. Make sure the O-ring is in position in the cup. Insert the cup and O-ring into the filter housing 6. Lift up and hold the spring to screw the ring nut onto the filter housing until the ring is lightly seated.

5) Tighten the ring nut approximately an additional 1/4 turn until the ring nut is tight. Align one of the four larger ring nut tabs with the spring and release it to lock the ring nut in position.

6) Run the engine and check the filter and lines for leaks.

EMU01905

INSPECTING IDLING SPEED

8 Do not touch or remove electrical

parts when starting or during operation.

8 Keep hands, hair and clothes away

from flywheel and other rotating parts while engine is running.

4-15

This procedure must be performed while the outboard motor is in the water. A test tank can be used.

213033

A diagnostic tachometer should be used for this procedure.

1) Start the engine and allow it to warm up fully in neutral until it is running smoothly. If the outboard motor is mounted on a boat, be sure the boat is tightly moored.

2) Verify whether the idle speed is set to specification. For idle speed specifications, see “Specifications” in this chapter.

NOTE:

Correct idle speed inspection is only possible if the engine is fully warmed up. If not warmed up fully, the idle speed will measure higher than normal. If you have difficulty verifying the idle speed, or the idle speed requires adjustment, consult your Yamaha dealer or other qualified mechanic.

EMU00377

CHECKING WATER IN ENGINE OIL TANK

There is a trap at the bottom of the engine oil tank. If water or foreign matter is visible in this trap, consult a Yamaha dealer.

1 Tr a p 2 Engine oil tank

4-16

EMU00383

CHECKING WIRING AND CONNECTORS

1) Check that each grounding wire is properly secured.

2) Check that each connector is engaged securely.

EMU00384

EXHAUST LEAKAGE

Start the engine and check that no exhaust leaks from the joints between the exhaust cover, cylinder head and crank case.

EMU00385

WATER LEAKAGE

Start the engine and check that no water leaks from the joints between the exhaust cover, cylinder head and crank case.

4-17

EMU01690

CHECKING POWER TRIM AND TILT SYSTEM

8 Never get under the lower unit while it

is tilted, even when the tilt-support lever is locked. Severe injury could occur if the outboard accidentally falls.

8 Make sure no one is under the out-

board before performing this test.

1) Check the power trim and tilt unit for any sign of oil leaks.

2) Operate each of the power trim and tilt switches on remote control and engine bottom cowling (if equipped) to check that all switches work.

3) Tilt up the motor and check that the tilt rod 1 and trim rods 2 are pushed out completely.

4) Use the tilt support lever 3 to lock the motor in the UP position. Operate the tilt down switch briefly so the motor is supported the tilt support lever.

5) Check that the tilt rod and trim rods are free of corrosion or other flaws.

6) Activate the tilt-down switch until the trim rods have gone completely into the cylinders.

7) Activate the trim-up switch until the tilt rod is fully extended. Unlock the tilt support lever.

8) Operate the motor to tilt down. Check that the tilt rod and trim rods operate smoothly.

NOTE:

If any operation is abnormal, consult a Yamaha dealer.

Recommended fluid:

Yamaha power trim & tilt fluid or ATF (DEXRON-

2).

4-18

210012

602051

EMU00388

CHECKING PROPELLER

You could be seriously injured if the engine accidentally starts while you are near the propeller. 8 Before inspecting, removing or

installing the propeller, remove the spark plug caps from the spark plugs. Also, put the shift control in Neutral, put the main switch in the “OFF” position and remove the key, and remove the lanyard from the engine stop switch. Turn off the battery cut-off switch if your boat has one.

8 Do not use your hand to hold the pro-

peller when loosening or tightening the propeller nut. Put a wood block between the cavitation plate and the propeller to prevent the propeller from turning.

4-19

602036

602074

EMU00390

Propeller Checking Point

8 Check each of the propeller blades for

wear, erosion from cavitation or ventilation, or other damage.

8 Check the splines for wear and damage. 8 Check for fish line winding around the

propeller shaft.

8 Check the propeller shaft oil seal for dam-

age.

EMU00976

Removing the Propeller

1) Straighten the cotter-pin 1 and pull it out using a pair of pliers.

2) Remove the propeller nut 2, washer 3 and spacer 4.

3) Remove the propeller 5 and thrust washer 6.

602053

EMU01560

Installing the Propeller

8 Be sure to install the thrust washer

before installing propeller, otherwise the lower case and propeller boss may be damaged.

8 Be sure to use a new cotter pin and

bend the ends over securely. Otherwise, the propeller could come off during operation and be lost.

1) Apply Yamaha Marine grease or Corrosion resistant grease to the propeller shaft.

2) Install the thrust washer and propeller on the propeller shaft.

3) Install the spacer and washer. Tighten the propeller nut to the specified torque.

Tightening torque:

Refer to “SPECIFICATIONS” page 4-1.

4) Align the propeller nut with the propeller shaft hole. Insert a new cotter pin in the hole and bend the cotter pin ends.

NOTE:

If the propeller nut does not align with the propeller shaft hole after tightening to the specified torque, then tighten the nut further to align it with the hole.

4-20

001392

001681

EMU01460*

CHANGING GEAR OIL

8 Be sure the outboard motor is securely

fastened to the transom or a stable stand. You could be severely injured if the outboard motor falls on you.

8 Never get under the lower unit while it

is tilted, even when the tilt support lever or knob is locked. Severe injury could occur if the outboard motor accidentally falls.

1) Tilt the outboard motor so that the gear oil drain screw is at the lowest point possible.

2) Place a suitable container under the gear case.

VZ225, VZ250

3) Remove the cooling water inlet covers on both sides of the gear case. Be careful not to lose the bolt and nut.

4) Remove the gear oil drain screw 1.

NOTE:

The gear oil drain screw is magnetic. Remove all metal particles from the screw before installing it.

4-21

5) Remove the oil level plug 2 to allow

the oil to drain completely.

Inspect the used oil after it has been drained. If the oil is milky, water is getting into the gear case which can cause gear damage. Consult a Yamaha dealer for repair of the lower unit seals.

NOTE:

For disposal of used oil consult your Yamaha dealer.

601033

001682

603024

6) With the outboard motor in a vertical position, and using a flexible or pressurized filling device, inject the gear oil into the gear oil drain screw hole.

Gear oil grade and capacity:

See “Specifications” in this chapter.

7) When the oil begins to flow out of the oil level plug hole, insert and tighten the oil level plug.

8) Insert and tighten the gear oil drain screw.

VZ225, VZ250

9) Securely install the cooling water inlet covers on both sides of the gear case using the bolt and nut removed earlier.

EMU14622

INSPECTING AND REPLACING ANODE(S)

Yamaha outboard motors are protected from corrosion by sacrificial anodes. Inspect the external anodes periodically. Remove scales from the surfaces of the anodes. Consult a Yamaha dealer for replacement of external anodes.

Do not paint anodes, as this would render them ineffective.

NOTE:

Inspect ground leads attached to external anodes on equipped models. Consult a Yamaha dealer for inspection and replacement of internal anodes attached to the power unit.

4-22

901015

UPPER LEVEL

LOWER LEVEL

EMU04041

CHECKING BATTERY (for Electric start models)

Battery electrolytic fluid is dangerous; it contains sulfuric acid and therefore is poisonous and highly caustic. Always follow these preventive measures: 8 Avoid bodily contact with electrolytic

fluid as it can cause severe burns or permanent eye injury.

8 Wear protective eye gear when han-

dling or working near batteries.

Antidote (EXTERNAL):

8 SKIN - Flush with water. 8 EYES - Flush with water for 15 minutes

and get immediate medical attention.

Antidote (INTERNAL): 8 Drink large quantities of water or milk

followed by milk of magnesia, beaten egg, or vegetable oil. Get immediate

medical attention. Batteries also generate explosive hydrogen gas; therefore, you should always follow these preventive measures: 8 Charge batteries in a well-ventilated

area. 8 Keep batteries away from fire, sparks,

or open flames (e.g., welding equip-

ment, lighted cigarettes, etc.). 8 DO NOT SMOKE when charging or

handling batteries. 8 KEEP BATTERIES AND ELECTROLYT-

IC FLUID OUT OF REACH OF CHIL-

DREN.

4-23

UPPER LEVEL

LOWER LEVEL

000639

8 A poorly maintained battery will quick-

ly deteriorate. 8 Ordinary tap-water contains minerals

harmful to a battery, and should not be

used for topping-up.

1) Check the electrolyte level at least once

a month. Fill to the manufacturer’s recommended level when necessary. Top up only with distilled water (or pure deionized water suitable to use in batteries).

2) Always keep the battery in a good state

of charge. Installing a voltmeter will help you monitor your battery. If you will not use the boat for a month or more, remove the battery from the boat and store it in a cool, dark place. Completely recharge the battery before using it.

3) If the battery will be stored for longer

than a month, check the specific gravity of the fluid at least once a month and recharge the battery when it is low.

NOTE:

Consult a Yamaha dealer when charging or re-charging batteries.

4-24

UPPER LEVEL

LOWER LEVEL

901012

EMU01847

Connecting the Battery

Mount the battery holder securely in a dry, well-ventilated, vibration-free location in the boat. Install the fully charged battery in the holder.

8 Make sure the main switch (on applica-

ble models) is “OFF” before working

on the battery. 8 Reversal of the battery leads will dam-

age the electrical parts. 8 Connect the RED lead first when

installing the battery and disconnect

the BLACK lead first when removing it.

Otherwise, the electrical parts can be

damaged. 8 The electrical contacts of the battery

and cables must be clean and properly

connected, or the battery will not start

the engine.

4-25

Connect the RED lead to the POSITIVE (+) terminal first. Then connect the BLACK lead to the NEGATIVE (-) terminal.

1 Red lead 2 Black lead 3 Battery

Yamaha VZ225C, Z250C, LZ250C, VZ250C User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

EMISSION CONTROL INFORMATION

QSAFETY INFORMATION

IMPORTANT LABELS

BASIC BOATING RULES

FUELING INSTRUCTIONS

PROPELLER SELECTION

MAIN COMPONENTS

WARNING SYSTEM

INSTALLATION

PRE-OPERATION CHECKS

STARTING ENGINE

WARMING UP ENGINE

SHIFTING

STOPPING ENGINE

TILTING UP/DOWN

SPECIFICATIONS

PERIODIC MAINTENANCE