Yamaha WOLVERINE 450 User Manual

READ THIS MANUAL CAREFULLY!

It contains important safety information.

OWNER’S MANUAL

YFM45FXX

WARNING

This ATV should not be ridden by anyone under 16 years of age.

3C2-F8199-12LIT-11626-21-47

EBU17091

EBU17170

INTRODUCTION

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Congratulations on your purchase of the Yamaha YFM45FXX. This ATV represents the result of many
years of Yamaha experience in the production of fine sporting, touring, and pacesetting racing machines.
With the purchase of this Yamaha, you can now appreciate the high degree of craftsmanship and reliability
that have made Yamaha a leader in these fields.
This manual will provide you with a good basic understanding of the features and operation of this ATV.

This manual includes important safety information. It provides information about special tech­niques and skills necessary to ride the ATV. It also includes basic maintenance and inspection proce-

dures. If you have any questions regarding the operation or maintenance of your ATV, please consult a
Yamaha dealer.

AN IMPORTANT SAFETY MESSAGE:

● READ THIS MANUAL TOGETHER WITH TIPS FOR THE ATV RIDER CAREFULLY AND COMPLETE-

LY BEFORE OPERATING YOUR ATV. MAKE SURE YOU UNDERSTAND ALL INSTRUCTIONS.

● PAY CLOSE ATTENTION TO THE WARNING AND CAUTION LABELS ON THE ATV.

● NEVER OPERATE AN ATV WITHOUT PROPER TRAINING OR INSTRUCTION. FREE TRAINING IS

AVAILABLE TO ANYONE WHO BUYS A NEW ATV. CALL 1-800-887-2887 FOR MORE INFORMA­TION.

● THIS ATV, AND ANY OTHER ATV OVER 90 cc, SHOULD NOT BE RIDDEN BY ANYONE UNDER 16

YEARS OF AGE.

● THIS ATV IS A HIGH-PERFORMANCE ATV FOR OFF-ROAD USE ONLY, FOR SPORT-TYPE REC-

REATIONAL AND COMPETITIVE USE BY EXPERIENCED OPERATORS.

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IMPORTANT MANUAL INFORMATION

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FAILURE TO FOLLOW THE WARNINGS CONTAINED IN THIS MANUAL CAN RESULT IN SERIOUS IN­JURY OR DEATH.
Particularly important information is distinguished in this manual by the following notations:

The Safety Alert Symbol means ATTENTION! BECOME ALERT! YOUR
SAFETY IS INVOLVED!

Failure to follow WARNING instructions could result in severe injury

WARNING

or death to the ATV operator, a bystander, or a person inspecting or
repairing the ATV.

CAUTION:

NOTE:

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

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

* Product and specifications are subject to change without notice.

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IMPORTANT NOTICE

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Welcome to the Yamaha world of motor sports!
This ATV is designed and manufactured for OFF-ROAD use only. It is illegal and unsafe to operate this ATV
on any public street, road or highway.
This ATV complies with all applicable OFF-ROAD noise level and spark arrester laws and regulations in
effect at the time of manufacture.
Please check your local riding laws and regulations before operating this ATV.

EBU17401

YFM45FXX

OWNER’S MANUAL

©2007 by Yamaha Motor Corporation, U.S.A.

1st edition, June 2007

AFFIX DEALER

LABEL HERE

Any reprinting or unauthorized use

without the written permission of

Yamaha Motor Corporation, U.S.A.

All rights reserved.

is expressly prohibited.

Printed in U.S.A.

P/N LIT-11626-21-47

EWB00010

WARNING

Indicates a potential hazard that could result
in serious injury or death.

EBU17420

TABLE OF CONTENTS

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

LOCATION OF THE WARNING AND

SPECIFICATION LABELS ............................ 2-1

Speed limiter ...............................................4-7

Front brake lever .........................................4-8

Brake pedal and rear brake lever ...............4-9

Drive select lever ........................................4-9

Fuel tank cap ............................................4-10

Fuel ...........................................................4-10

Fuel cock ..................................................4-12

Starter (choke) .........................................4-13

Seat ..........................................................4-14

Storage compartment ...............................4-15

Adjusting the front shock absorber

assemblies ..............................................4-16

Adjusting the rear shock absorber

assembly .................................................4-17

DESCRIPTION .............................................. 3-1

Left view ...................................................... 3-1

Right view.................................................... 3-1

Controls and instruments ............................ 3-2

INSTRUMENT AND CONTROL

FUNCTIONS .................................................. 4-1

Main switch ................................................ 4-1

Indicator lights and warning light ................ 4-2

Speedometer unit ....................................... 4-3

Handlebar switches .................................... 4-4

Throttle lever .............................................. 4-6

PRE-OPERATION CHECKS ..........................5-1

Pre-operation check list ..............................5-1

Fuel .............................................................5-4

Engine oil ....................................................5-4

Final gear oil ...............................................5-4

Differential gear oil ......................................5-4

Coolant .......................................................5-4

Front and rear brakes .................................5-5

Throttle lever ...............................................5-6

Tires ............................................................5-6

Measuring the tire pressure ........................5-7

Tire wear limit .............................................5-8

Chassis fasteners ....................................... 5-9

Instruments, lights and switches ................ 5-9

OPERATION .................................................. 6-1

Starting a cold engine ................................ 6-1

Starting a warm engine .............................. 6-3

Operating the drive select lever and

driving in reverse ...................................... 6-3

Engine break-in .......................................... 6-5

Parking ....................................................... 6-6

Parking on a slope ..................................... 6-6

Accessories and loading ............................ 6-7

RIDING YOUR ATV ...................................... 7-1

GETTING TO KNOW YOUR ATV............... 7-2

RIDE WITH CARE AND GOOD

JUDGEMENT............................................ 7-3

BE CAREFUL WHERE YOU RIDE........... 7-13

TURNING YOUR ATV .............................. 7-17

CLIMBING UPHILL ................................... 7-19

RIDING DOWNHILL.................................. 7-23

CROSSING A SLOPE............................... 7-25

CROSSING THROUGH SHALLOW

WATER ................................................... 7-27

RIDING OVER ROUGH TERRAIN ........... 7-29

SLIDING AND SKIDDING ......................... 7-30

WHAT TO DO IF... .................................... 7-31

WHAT TO DO............................................7-32

PERIODIC MAINTENANCE AND MINOR

REPAIR ..........................................................8-1

Owner’s manual and tool kit .......................8-1

Periodic maintenance chart for

the emission control system .....................8-3

General maintenance and lubrication

chart ..........................................................8-5

Removing and installing cowlings and

panels .......................................................8-9

Checking the spark plug ...........................8-15

Engine oil and oil filter cartridge ................8-17

Final gear oil .............................................8-22

Changing the differential gear oil ..............8-24

Coolant .....................................................8-26

Cleaning the air filter element ...................8-31

Cleaning the spark arrester ......................8-34

V-belt cooling duct check hose .................8-35

V-belt case drain plug ...............................8-36

Adjusting the carburetor ............................8-36

Adjusting the engine idling speed .............8-37

Adjusting the throttle cable free play .........8-38

Valve clearance ........................................8-38

Adjusting the drive select lever safety

system cable ...........................................8-39

Checking the front and rear brake pads ...8-39

Checking the brake fluid level .................. 8-40

Changing the brake fluid .......................... 8-41

Checking the front brake lever free

play ......................................................... 8-42

Adjusting the rear brake lever free play

and checking the brake pedal position ... 8-42

Axle boots ................................................ 8-44

Brake light switches ................................. 8-45

Checking and lubricating the cables ........ 8-46

Checking and lubricating the front and

rear brake levers .................................... 8-46

Checking and lubricating the brake

pedal ...................................................... 8-47

Checking the wheel hub bearings ............ 8-47

Lubricating the steering shaft ................... 8-47

Battery ...................................................... 8-47

Replacing a fuse ...................................... 8-50

Replacing a headlight bulb ....................... 8-51

Adjusting a headlight beam ...................... 8-53

Replacing the tail/brake light bulb ............ 8-54

Removing a wheel .................................... 8-55

Installing a wheel ...................................... 8-55

Troubleshooting ....................................... 8-56

Troubleshooting charts ............................. 8-58

Storage .......................................................9-2

SPECIFICATIONS .......................................10-1

CONSUMER INFORMATION.......................11-1

Identification numbers ...............................11-1

Noise regulation ........................................11-3

Maintenance record ..................................11-4

YAMAHA MOTOR CORPORATION,

U.S.A. ATV LIMITED WARRANTY .........11-5

YAMAHA EXTENDED SERVICE

(Y.E.S.) ...................................................11-7

CLEANING AND STORAGE.......................... 9-1

Cleaning ..................................................... 9-1

EBU17430

SAFETY INFORMATION

EBU17513

AN ATV IS NOT A TOY AND CAN BE HAZARD­OUS TO OPERATE.

An ATV handles differently from other vehicles, in­cluding motorcycles and cars. A collision or roll­over can occur quickly, even during routine
maneuvers such as turning and riding on hills or
over obstacles, if you fail to take proper precau­tions.
SEVERE INJURY OR DEATH can result if you do
not follow these instructions:

● Read this manual and all labels carefully and fol-

low the operating procedures described.

● Never operate an ATV without proper training or

instruction. Take a Training Course.
should receive training from a certified instruc­tor. Contact an authorized ATV dealer or call 1­800-887-2887 to find out about the training
courses nearest you.

● Always follow the age recommendation:

– A child under 16 years old should never oper­ate an ATV with engine size greater than 90 cc.

Beginners

1

● Never allow a child under age 16 to operate an

ATV without adult supervision, and never allow
continued use of an ATV by a child if he or she
does not have the abilities to operate it safely.

● Never carry a passenger on an ATV.

● Always avoid operating an ATV on any paved

surfaces, including sidewalks, driveways, park­ing lots and streets.

● Never operate an ATV on any public street, road

or highway, even a dirt or gravel one.

● Never operate an ATV without wearing an ap-

proved motorcycle helmet that fits properly. You
should also wear eye protection (goggles or face
shield), gloves, boots, a long-sleeved shirt or a
jacket, and long pants.

● Never consume alcohol or drugs before or while

operating this ATV.

● Never operate at speeds too fast for your skills

or the riding conditions. Always go at a speed
that is proper for the terrain, visibility, operating
conditions, and your experience.

● Never attempt wheelies, jumps, or other stunts.

1-1

● Always inspect your ATV each time you use it to

make sure it is in safe operating condition. Al-

1

ways follow the inspection and maintenance
procedures and schedules described in this
manual.

● Always keep both hands on the handlebars and

both feet on the footboards of the ATV during
operation.

● Always go slowly and be extra careful when op-

erating on unfamiliar terrain. Always be alert to
changing terrain conditions when operating the
ATV.

● Never operate on excessively rough, slippery or

loose terrain until you have learned and prac­ticed the skills necessary to control the ATV on
such terrain. Always be especially cautious on
these kinds of terrain.

● Always follow proper procedures for turning as

described in this manual. Practice turning at low
speeds before attempting to turn at faster
speeds and never turn at excessive speeds.

● Never operate the ATV on hills too steep for the

ATV or for your abilities. Practice on smaller hills
before attempting larger hills.

● Always follow proper procedures for climbing

hills as described in this manual. Check the ter­rain carefully before you start up any hill. Never
climb hills with excessively slippery or loose sur­faces. Shift your weight forward. Never open the
throttle suddenly. Never go over the top of a hill
at high speed.

● Always follow proper procedures for going down

hills and for braking on hills as described in this
manual. Check the terrain carefully before you
start down any hill. Shift your weight backward.
Never go down a hill at high speed. Avoid going
down a hill at an angle that would cause the ve­hicle to lean sharply to one side. Go straight
down the hill where possible.

● Always follow proper procedures for crossing

the side of a hill as described in this manual.
Avoid hills with excessively slippery or loose sur­faces. Shift your weight to the uphill side of the
ATV. Never attempt to turn the ATV around on
any hill until you have mastered the turning tech­nique described in this manual on level ground.
Avoid crossing the side of a steep hill if possible.

● Always use proper procedures if you stall or roll

backwards when climbing a hill. To avoid stall­ing, maintain a steady speed when climbing a

1-2

hill. If you stall or roll backwards, follow the spe­cial procedure for braking described in this man­ual. Dismount on the uphill side or to a side if
pointed straight uphill. Turn the ATV around and
remount, following the procedure described in
this manual.

● Always check for obstacles before operating in a

new area.

● Never attempt to operate over large obstacles,

such as large rocks or fallen trees. Always follow
proper procedures when operating over obsta­cles as described in this manual.

● Always be careful when skidding or sliding.

Learn to safely control skidding or sliding by
practicing at low speeds and on level, smooth
terrain. On extremely slippery surfaces, such as
ice, go slowly and be very cautious in order to re­duce the chance of skidding or sliding out of con­trol.

● Never operate an ATV in fast flowing water or in

water deeper than that recommended in this
manual. Remember that wet brakes may have
reduced stopping ability. Test your brakes after
leaving water. If necessary, apply them several
times to let friction dry out the linings.

● Always be sure there are no obstacles or people

behind you when you operate in reverse. When
it is safe to proceed in reverse, go slowly.

● Always use the size and type of tires specified in

this manual.

● Always maintain proper tire pressure as de-

scribed in this manual.

● Never modify an ATV through improper installa-

tion or use of accessories.

● Never exceed the stated load capacity for an

ATV. Cargo should be properly distributed and
securely attached. Reduce speed and follow in­structions in this manual for carrying cargo. Al­low greater distance for braking.

FOR MORE INFORMATION ABOUT ATV SAFE­TY, call the Consumer Products Safety Commis-

sion at 1-800-638-2772, or the ATV Distributor’s
Safety Hotline at 1-800-852-5344.

1

1-3

EWB00021

WARNING

1

POTENTIAL HAZARD
Improper handling of gasoline.
WHAT CAN HAPPEN
Gasoline can catch fire and you could be
burned.
HOW TO AVOID THE HAZARD
Always turn off the engine when refueling.
Do not refuel right after the engine has been
running and is still very hot.
Do not spill gasoline on the engine or ex­haust pipe/muffler when refueling.
Never refuel while smoking, or in the vicinity
of sparks, open flames, or other sources of
ignition such as the pilot lights of water
heaters and clothes dryers.
When transporting the ATV in another vehi­cle, be sure it is kept upright and that the
fuel cock is in the “OFF” position. Other­wise, fuel may leak out of the carburetor or
fuel tank.
WHAT CAN HAPPEN
Gasoline is poisonous and can cause inju­ries.

HOW TO AVOID THE HAZARD
If you should swallow some gasoline or in­hale a lot of gasoline vapor, or get some gas­oline in your eyes, seek medical help
immediately. If gasoline spills on your skin,
wash with soap and water. If gasoline spills
on your clothing, change your clothes.

EWB00030

WARNING

POTENTIAL HAZARD
Starting or running the engine in a closed ar­ea.

1-4

WHAT CAN HAPPEN
Exhaust fumes are poisonous and may
cause loss of consciousness and death
within a short time.
HOW TO AVOID THE HAZARD
Always operate your ATV in an area with ad­equate ventilation.

1

1-5

2

EBU17660

LOCATION OF THE WARNING AND SPECIFICATION LABELS

2-1

EBU17670

Read and understand all of the labels on your ATV. These labels contain important information for safe and
proper operation.
Never remove any labels from your ATV. If a label becomes difficult to read or comes off, request a replace­ment label from your Yamaha dealer.

2

2-2

2-323-1

EBU17680

DESCRIPTION

EBU17690

Left view

1. Front shock absorber assembly spring preload adjusting
ring

2. Fuel cock

3. Air filter case

4. Fuses

5. Storage compartment and tool kit

6. Seat lock lever

7. Rear shock absorber assembly spring preload adjusting
ring

8. Engine oil filler cap

9. Oil filter cartridge

10.Coolant reservoir

11.V-belt cooling duct check hose

EBU17700

Right view

3

1. Spark arrester

2. Tail/brake light

3. Battery

4. Spark plug

5. Rear brake fluid reservoir

6. Radiator cap

7. Front shock absorber assembly spring preload adjusting
ring

8. Rear brake light switch

9. Brake pedal

10.V-belt case drain plug

EBU17712

Controls and instruments

3

1. Rear brake lever

2. Handlebar switches

3. Starter (choke)

4. Drive select lever

5. Main switch

6. Speedometer unit

7. Fuel tank cap

8. Front brake fluid reservoir

9. On-Command four-wheel-drive switch

10.Front brake lever

11.Throttle lever

NOTE:

The ATV you have purchased may differ slightly
from the figures shown in this manual.

3-2

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INSTRUMENT AND CONTROL FUNCTIONS

EWB00010

WARNING

Indicates a potential hazard that could result in
serious injury or death.

EBU17760

Main switch

The positions of the main switch are as follows:

ON

All electrical systems are supplied with power. The
headlights and taillight come on when the light
switch is on, and the engine can be started. The
key cannot be removed.

OFF

All electrical systems are off. The key can be re­moved.

4

1. Main switch

4-1

EBU17813

Indicator lights and warning light

4

1. Coolant temperature warning light “”

2. Neutral indicator light “N”

3. Reverse indicator light “R”

4. Park indicator light “P”

5. On-Command four-wheel-drive indicator “”

EBU17842

Reverse indicator light “”

This indicator light comes on when the transmis­sion is in the reverse position.
Furthermore, this indicator light flashes when the
engine is being raced for 10 seconds or more.

NOTE:

If the indicator light flashes under any other circum­stances or the speedometer does not show the
speed while riding, have a Yamaha dealer check
the speed sensor circuit.

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Neutral indicator light “”

This indicator light comes on when the transmis­sion is in the neutral position.

EBU26700

Coolant temperature warning light “”

This warning light comes on when the engine over­heats. When this occurs during operation, stop the
engine as soon as it is safe to do so and allow it to
cool down for about 10 minutes.
The electrical circuit of the warning light can be
checked by turning the key to “ON”. If the warning
light does not come on, and then go off, have a
Yamaha dealer check the electrical circuit.

ECB00010

CAUTION:

● The engine may overheat if the ATV is over-

loaded. In this case, reduce the load to spec­ification.

4-2

● Start the engine after making sure that the

warning light is out. Continuous use while
the warning light is on may cause damage to
the engine.

EBU26591

On-Command four-wheel-drive indicator “”

This indicator comes on when the On-Command
four-wheel-drive switch is set to the “4WD” posi­tion.

NOTE:

Due to the synchronizing mechanism in the differ­ential gear case, the indicator may not come on un­til the ATV starts moving.

EBU17970

Park indicator light “”

This indicator light comes on when the transmis­sion is in the park position.

EBU26362

Speedometer unit

4

1. Speedometer

2. Odometer/tripmeter

3. “SELECT” button

The speedometer unit is equipped with the follow­ing:

● a speedometer (which shows the riding speed)

● an odometer (which shows the total distance

traveled)

● a tripmeter (which shows the distance traveled

since it was last set to zero)

4-3

Odometer and tripmeter modes

Pushing the “SELECT” button switches the display
between the odometer mode “ODO” and the trip­meter mode “TRIP” in the following order:
ODO → TRIP → ODO
To reset the tripmeter, select it by pushing the “SE-
LECT” button, and then push the “SELECT” button
for at least three seconds. The tripmeter can be

4

used to estimate the distance that can be traveled
with a full tank of fuel. This information will enable
you to plan future fuel stops.

NOTE:

Pushing in the “SELECT” button, then turning the
key to “ON”, and keeping them in this position for
at least two seconds switches the display between
“mph” and “km/h”.

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Handlebar switches

1. Light switch “ / /OFF”

2. Engine stop switch “ / ”

3. Start switch “”

EBU18080

Engine stop switch “ / ”

Set this switch to “” before starting the engine.
The engine stop switch controls the ignition and
stops the engine when it is running. Use this switch
to stop the engine in an emergency situation. The
engine will not start or run when this switch is set
to “”.

4-4

EBU18100

Start switch “”

Push this switch to crank the engine with the start­er.

ECB00050

CAUTION:

See the starting instructions on page 6-1 prior
to starting the engine.

EBU18151

Light switch “ //OFF”

Set this switch to “” to turn on the low beams
and the taillight. Set the switch to “” to turn on
the high beams and the taillight. Set the switch to
“OFF” to turn off all the lights.

ECB00040

CAUTION:

Do not use the headlights with the engine
turned off for an extended period of time, oth­erwise the battery may discharge to the point
that the starter motor will not operate properly.
If this should happen, remove the battery and
recharge it.

EBU28210

On-Command four-wheel-drive switch
“2WD”/“4WD”

This ATV is equipped with a switch to change from
two-wheel drive to four-wheel drive and vice-versa.
Select the appropriate drive according to the ter­rain and the conditions.

● “2WD” (two-wheel drive): Power is supplied to

the rear wheels.

● “4WD” (four-wheel drive): Power is supplied to

the rear and front wheels.

To change from two-wheel drive to four-wheel
drive, stop the ATV and push the switch in to the
“4WD” position. Then, the four-wheel-drive
indicator “” comes on in the speedometer unit
display.
To change from four-wheel drive to two-wheel
drive, stop the ATV and push the switch in to the
“2WD” position.

4

4-5

4

1. On-Command four-wheel-drive switch “2WD”/“4WD”

EWB00120

WARNING

POTENTIAL HAZARD
Changing from two-wheel drive to four­wheel drive or from four-wheel drive to two­wheel drive while the ATV is moving.

WHAT CAN HAPPEN
The ATV handles differently in two-wheel
drive than in four-wheel drive in some cir­cumstances. Changing from two-wheel drive
to four-wheel drive or from four-wheel drive
to two-wheel drive while moving may cause
the ATV to unexpectedly handle differently.
This could distract the operator and in­crease the risk of losing control and of caus­ing an accident.
HOW TO AVOID THE HAZARD
Always stop the ATV before changing from
two-wheel drive to four-wheel drive or vice­versa.

EBU18270

Throttle lever

Once the engine is running, movement of the throt­tle lever will increase the engine speed.
Regulate the speed of the ATV by varying the
throttle position. Because the throttle is spring­loaded, the ATV will decelerate, and the engine will
return to an idle any time the hand is removed from
the throttle lever.

4-6

HOW TO AVOID THE HAZARD
Check the operation of the throttle lever be­fore you start the engine. If it does not work
smoothly, check for the cause. Correct the
problem before riding the ATV. Consult a
Yamaha dealer if you can’t find or solve the
problem yourself.

1. Throttle lever

Before starting the engine, check the throttle to be
sure it is operating smoothly. Make sure it returns
to the idle position as soon as the lever is released.

EWB00200

WARNING

POTENTIAL HAZARD
Malfunction of throttle.
WHAT CAN HAPPEN
The throttle could be hard to operate, mak­ing it difficult to speed up or slow down
when you need to. This could cause an acci­dent.

EBU18311

Speed limiter

Your ATV was delivered with an adjustable speed
limiter. The speed limiter keeps the throttle from
fully opening, even when the throttle lever is
pushed to the maximum.

1. Loosen the locknut.

2. To increase the maximum engine power avail­able and the maximum speed of the ATV, turn
the adjusting screw in direction (a). To de­crease the maximum engine power available
and the maximum speed of the ATV, turn the
adjusting screw in direction (b).

4-7

4

4

1. Locknut

2. Adjusting screw

3. No more than 12 mm (0.47 in)

3. Tighten the locknut.

EWB00190

WARNING

POTENTIAL HAZARD
Improper adjustment of the speed limiter
and throttle.
WHAT CAN HAPPEN
The throttle cable could be damaged. Im­proper throttle operation could result. You
could lose control, have an accident or be in­jured.

HOW TO AVOID THE HAZARD
Do not turn the adjusting screw out more
than 12 mm (0.47 in). Always make sure the
throttle lever free play is adjusted to 3.0–5.0
mm (0.12–0.20 in). (See page 8-38.)

EBU18391

Front brake lever

The front brake lever is located on the right handle­bar. To apply the front brake, pull the brake lever
toward the handlebar grip.

1. Front brake lever

4-8

EBU18442

Brake pedal and rear brake lever

The brake pedal is located on the right side of the
ATV and the rear brake lever is located on the left
handlebar. To apply the rear brake, push down on
the brake pedal or pull the brake lever toward the
handlebar grip.

1. Brake pedal

4

1. Rear brake lever

EBU18621

Drive select lever

The drive select lever is used to shift your ATV into
the forward, neutral, reverse and park positions.
See the “Operating the drive select lever and driv­ing in reverse” section on page 6-3 for the drive se­lect lever operation.

4-9

4

1. Drive select lever 1. Fuel tank cap

EBU18720

Fuel tank cap

Remove the fuel tank cap by turning it counter­clockwise.

EBU18730

Fuel

Make sure that there is sufficient fuel in the tank.
Fill the fuel tank to the bottom of the filler tube as
shown.

4-10

1. Fuel level

2. Fuel tank filler tube

Recommended fuel:

UNLEADED GASOLINE ONLY

Fuel tank capacity:

14.5 L (3.83 US gal) (3.19 Imp.gal)

Fuel reserve amount:

4.5 L (1.19 US gal) (0.99 Imp.gal)

ECB00070

CAUTION:

Use only unleaded gasoline. The use of leaded
gasoline will cause severe damage to internal
engine parts, such as the valves and piston
rings, as well as to the exhaust system.

Your Yamaha engine has been designed to use
regular unleaded gasoline with a pump octane
number [(R+M)/2] of 86 or higher, or a research oc­tane number of 91 or higher. If knocking or pinging
occurs, use a different brand of gasoline or premi­um unleaded fuel. Unleaded fuel will give you long­er spark plug life and reduced maintenance cost.

Gasohol

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

4

4-11

EWB00270

WARNING

POTENTIAL HAZARD
Improper care when refueling.
WHAT CAN HAPPEN
Fuel can spill, which can cause a fire and se­vere injury.
Fuel expands when it heats up. If the fuel

4

tank is overfilled, fuel could spill out due to
heat from the engine or the sun.
HOW TO AVOID THE HAZARD
Do not overfill the fuel tank. Be careful not to
spill fuel, especially on the engine or ex­haust pipe. Wipe up any spilled fuel immedi­ately. Be sure the fuel tank cap is closed
securely.
Do not refuel right after the engine has been
running and is still very hot.

EBU18820

Fuel cock

The fuel cock supplies fuel from the tank to the car­buretor while also filtering it.
The fuel cock lever positions are explained as fol­lows and shown in the illustrations.

OFF

1. Arrow mark positioned over “OFF”

With the fuel cock lever in this position, fuel will not
flow. Always turn the fuel cock lever to this position
when the engine is not running.

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