READ THIS MANUAL CAREFULLY!
It contains important safety information.
OWNER’S MANUAL
YFM250XN
WARNING
This ATV should not be ridden by anyone under 16 years of age.
LIT-11626-14-17
4XE-F8199-13
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EBU00001
INTRODUCTION
Congratulations on your purchase of the Yamaha YFM250X. It represents the result of
many years of Yamaha experience in the production of fine sporting, touring, and pace-set-
ting 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.
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This manual will provide you with a good basic understanding of the features and opera-
tion of this machine. This manual includes important safety information. It provides infor-
mation about special techniques and skills necessary to ride your machine.It also includes
basic maintenance and inspection procedures. If you have any questions regarding the op-
eration or maintenance of your machine, please consult a Yamaha dealer.
AN IMPORTANT SAFETY MESSAGE:
● READ THIS MANUAL TOGETHER WITH TIPS FOR THE ATV RIDER CAREFULLY AND
COMPLETELY BEFORE OPERATING YOUR MACHINE. MAKE SURE YOU UNDERSTAND
ALL INSTRUCTIONS.
● PAY CLOSE ATTENTION TO THE WARNING AND CAUTION LABELS ON THE MACHINE.
● NEVER OPERATE AN ATV WITHOUT PROPER TRAINING OR INSTRUCTION. FREE
TRAINING IS AVAILABLE TO ANYONE WHO BUYS A NEW ATV. CALL 1-800-447-4700
FOR MORE INFORMATION.
● THIS ATV, AND ANY OTHER ATV OVER 90cc, SHOULD NOT BE RIDDEN BY ANYONE
UNDER 16 YEARS OF AGE.
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EBU00010
IMPORTANT MANUAL INFORMATION
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:
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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 machine.
WARNING
A CAUTION indicates special precautions that must be taken to avoid
damage to the machine.
CAUTION:
NOTE:
A NOTE provides key information to make procedures easier or
clearer.
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EBU00011
IMPORTANT NOTICE
This machine is designed and manufactured for OFF-ROAD use only. It is illegal and unsafe
to operate this machine on any public street, road or highway.
This machine 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 machine.
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EBU00531
YFM250XN(C)
OWNER’S MANUAL
© 2000 by Yamaha Motor Corporation,
U.S.A.
AFFIX DEALER
LABEL HERE
1st Edition, May 2000
All rights reserved. Any reprinting or
unauthorized use without the written
permission of
Yamaha Motor Corporation,
U.S.A. is expressly prohibited.
Printed in U.S.A.
P/N LIT-11626-14-17
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EBU00014
CONTROL FUNCTIONS...................4-1
Main switch.....................................4-1
Indicator lights................................4-2
Handlebar switches .......................4-2
Throttle lever ..................................4-4
Speed limiter ..................................4-5
Front brake lever ............................4-6
Rear brake pedal and lever ...........4-6
Parking brake..................................4-8
Shift pedal.......................................4-9
Drive select lever............................4-9
Recoil starter.................................4-10
Fuel tank cap.................................4-11
Fuel cock .......................................4-12
Starter (choke)..............................4-13
Seat................................................4-14
Storage box ..................................4-15
Front carrier ..................................4-16
Rear carrier ...................................4-16
Rear shock absorber
4
WARNING
Indicates a potential hazard that could
result in serious injury or death.
CONTENTS
LOCATION OF THE WARNING
1
AND SPECIFICATION LABELS .......1-1
SAFETY INFORMATION .................2-1
2
DESCRIPTION AND MACHINE
3
IDENTIFICATION..............................3-1
Identification numbers record......3-2
Key identification number ............3-2
Vehicle identification number ......3-3
Model label.....................................3-3
adjustment...................................4-16
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PRE-OPERATION CHECKS .............5-1
Front and rear brakes....................5-3
Fuel..................................................5-5
Engine oil........................................5-7
Final gear oil...................................5-8
Throttle lever..................................5-8
Fittings and Fasteners...................5-8
Lights...............................................5-8
Switches .........................................5-8
Battery.............................................5-8
Tires.................................................5-9
How to measure tire pressure....5-11
Tire wear limit..............................5-12
Engine break-in ..............................6-7
Parking ............................................6-8
Parking on a slope .........................6-9
Accessories and loading .............6-10
5
RIDING YOUR ATV ..........................7-1
Getting to know your ATV ............7-3
Ride with care and good
judgement .....................................7-4
Be careful where you ride...........7-16
Turning your ATV ........................7-23
Climbing uphill.............................7-25
Riding downhill ............................7-30
Crossing a slope...........................7-32
Crossing through shallow
water ............................................7-34
Riding over rough terrain............7-36
Sliding and skidding....................7-37
What to do if.................................7-39
What to do ....................................7-39
7
OPERATION .....................................6-1
Starting a cold engine...................6-1
Starting a warm engine ................6-3
Warming up ...................................6-3
Drive select lever operation and
reverse driving..............................6-4
Shifting ...........................................6-5
To start out and accelerate: ..........6-6
To decelerate:.................................6-7
6
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PERIODIC MAINTENANCE AND
Brake lever and brake pedal
8
ADJUSTMENT.................................8-1
Owner’s manual and tool kit ........8-1
Periodic maintenance/
lubrication....................................8-25
Steering shaft lubrication............8-26
Wheel removal .............................8-26
Wheel installation ........................8-27
Battery...........................................8-28
Replenishing the battery fluid.....8-30
Fuse replacement.........................8-31
Replacing the headlight bulb......8-32
Headlight beam adjustment .......8-33
Spark arrester cleaning ...............8-34
Troubleshooting...........................8-35
Troubleshooting chart.................8-36
lubrication .....................................8-3
Engine oil........................................8-5
Final gear oil...................................8-9
Spark plug inspection..................8-11
Air filter cleaning..........................8-12
Carburetor adjustment................8-15
Idle speed adjustment.................8-15
Valve clearance adjustment........8-16
Throttle lever adjustment............8-16
Front brake pad inspection.........8-17
Rear brake shoe inspection ........8-17
Brake fluid level inspection.........8-18
Brake fluid replacement..............8-19
Front brake adjustment...............8-19
Rear brake adjustment................8-21
Clutch adjustment........................8-23
Cable inspection and
CLEANING AND STORAGE ............9-1
Cleaning ..........................................9-1
Storage............................................9-3
9
SPECIFICATIONS ...........................10-1
NOISE REGULATION.....................11-1
10
11
lubrication ...................................8-24
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MAINTENANCE RECORD.............12-1
ATV LIMITED WARRANTY ...........13-1
12
13
14
YAMAHA EXTENDED SERVICE
(Y.E.S.) ............................................14-1
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EBU00464
LOCATION OF THE WARNING AND
SPECIFICATION LABELS
E
1-1
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1
2
Read and understand all of the labels on
your machine. They contain important in-
formation for safe and proper operation of
your ATV.
1
2
3
Never remove any labels from your ATV. If
a label becomes difficult to read or comes
off, a replacement label is available from
your Yamaha dealer.
4
5
6
7
8
9
10
11
12
13
14
1-2
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3
5
4
1-3
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6
7
8
1-4
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EBU00017*
SAFETY INFORMATION
AN ATV IS NOT A TOY AND CAN BE HAZARDOUS TO OPERATE. An ATV handles differ-
ently 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 obsta-
cles, 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 follow the operating procedures described.
● Never operate an ATV without proper training or instruction.Take a Training Course. Be-
ginners should receive training from a certified instructor. Contact an authorized ATV
dealer or call 1-800-447-4700 to find out about the training courses nearest you.
● Always follow the age recommendation:
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- A child under 16 years old should never operate an ATV with engine size greater than
90cc.
● 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 oper-
ate 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.
2-1
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● Never operate an ATV without wearing an approved motorcycle helmet that fits proper-
ly. You should also wear eye protection (goggles or face shield), gloves, boots, long-
sleeved shirt or 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 conditions. Always go at a speed
that is proper for the terrain, visibility and operating conditions, and your experience.
● Never attempt wheelies, jumps, or other stunts.
● Always inspect your ATV each time you use it to make sure it is in safe operating condi-
tion. Always follow the inspection and maintenance procedures and schedules de-
scribed in this manual.
● Always keep both hands on the handlebars and both feet on the footboards of the ATV
during operation.
2
2
3
4
5
6
7
8
● Always go slowly and be extra careful when operating 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 turn-
ing at low speeds before attempting to turn at faster speeds. Do not turn at excessive
speed.
● Never operate the ATV on hills too steep for the ATV or for your abilities. Practice on
smaller hills before attempting larger hills.
9
20
22
22
23
24
2-2
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● 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 slip-
pery or loose surfaces. Shift your weight forward. Never open the throttle suddenly or
make sudden gear changes. 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 de-
scribed 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.
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● Always follow proper procedures for crossing the side of a hill as described in this man-
ual. 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 mas-
tered 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, use proper gear and maintain a steady speed when climbing a 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.
2-3
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● 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.
E
● Always be sure there are no obstacles or people behind you when you operate in re-
verse. When it is safe to proceed in reverse, go slowly.
● Always use the size and type tires specified in this manual.
Always maintain proper tire pressure as described in this manual.
● Never modify an ATV through improper installation 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 or pulling a trailer. Allow greater distance for braking.
FOR MORE INFORMATION ABOUT ATV SAFETY, call the Consumer Products Safety Com-
mission at 1-800-638-2772, or the ATV Distributor’s Safety Hotline at 1-800-852-5344.
2-4
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WARNING
When transporting the machine in an-
other vehicle, be sure it is kept upright
and that the fuel cock is in the “OFF” po-
sition. Otherwise, fuel may leak out of
the carburetor or fuel tank.
POTENTIAL HAZARD
Improper handling of gasoline.
WHAT CAN HAPPEN
Gasoline can catch fire and you could be
burned.
WHAT CAN HAPPEN
Gasoline is poisonous and can cause
injuries.
HOW TO AVOID THE HAZARD
Always turn off the engine when refuel-
ing.
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, see your
doctor immediately.
If gasoline spills on your skin, wash with
soap and water. If gasoline spills on
your clothing, change your clothes.
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 re-
fuel while smoking, or while in the vicin-
ity of sparks, open flames, or other
sources of ignition such as the pilot
lights of water heaters and clothes dry-
ers.
2-5
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WARNING
POTENTIAL HAZARD
Starting or running the engine in a
closed area.
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 machine in an area
with adequate ventilation.
2-6
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EBU00032
DESCRIPTION AND MACHINE IDENTIFICATION
1. Spark arrester
2. Rear carrier
3. Seat
4. Fuel tank cap
5. Front carrier
6. Brake pedal
7. Front wheel
8. Headlight
12. Taillight
13. Rear wheel
14. Shift pedal
15. Drive select lever
16. Rear brake lever
17. Parking brake
18. Main switch
19. Front brake lever
20. Throttle lever
21. Handlebar switches
9. Fuel cock
10. Starter (choke)
11. Recoil starter
NOTE:
The machine you have purchased may differ
slightly from those shown in the figures of this
manual.
3-1
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EBU00033
EBU00035
Identification numbers record
Key identification number
Record the key identification number, vehi-
cle identification number and model label
information in the spaces provided for as-
sistance when ordering spare parts from a
Yamaha dealer or for reference in case the
vehicle is stolen.
The key identification number is stamped
on the key as shown in the following illus-
tration. This number can be used for order-
ing a new key.
3
3
3
4
1. KEY IDENTIFICATION NUMBER:
5
6
7
8
2. VEHICLE IDENTIFICATION NUMBER:
3. MODEL LABEL INFORMATION:
9
30
33
33
1. Key identification number
33
34
3-2
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EBU00036
EBU00038
Vehicle identification number
The vehicle identification number is
stamped into the frame.
Model label
The model label is affixed to the frame.
Record the information on this label in the
space provided. This information will be
needed to order spare parts from your
Yamaha dealer.
1. Vehicle identification number
NOTE:
The vehicle identification number is used
to identify your machine.
1. Model label
3-3
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EBU00039
CONTROL FUNCTIONS
4
WARNING
4
Indicates a potential hazard that could
result in serious injury or death.
4
4
EBU00041
Main switch
5
Functions of the respective switch posi-
tions are as follows:
6
7
ON:
8
Engine can be started only at this position
and the headlight and taillight come on
when the light switch is on.
9
40
44
44
OFF:
All electrical circuits are switched off. The
key can be removed in this position.
44
44
4-1
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EBU00043
EBU00053
Indicator lights
Handlebar switches
1. Reverse indicator light “R”
2. Neutral indicator light “N”
1. Lights switch “LIGHTS”
2. Engine stop switch “ENG.STOP”
3. Start switch “START”
EBU00602
EBU00054
Reverse indicator light “R”
This indicator light comes on when the
transmission is in reverse.
Engine stop switch “ENG. STOP”
Make sure that the engine stop switch is in
the “RUN” position. The engine stop switch
controls ignition and can be used at all times
to stop the engine, especially in an emer-
gency. The engine will not start or run when
the engine stop switch is turned to “OFF”.
EBU00603
Neutral indicator light “N”
This indicator light comes on when the
transmission is in neutral.
4-2
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EBU00647
EBU00734
Start switch “START”
The starter motor cranks the engine when
this switch is pushed.
Light switch “LIGHTS”
Turn the switch to the “LO” position to
switch on the low beam and the taillight.
Turn the switch to the “HI” position to
switch on the high beam and the taillight.
Turn the switch to the “OFF” position to
switch off the headlight and the taillight.
CAUTION:
See the starting instructions on page 6-1
prior to starting the engine.
CAUTION:
Do not use the headlight with the engine
turned off for more than thirty minutes.
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.
4-3
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EBU00062
Throttle lever
WARNING
Once the engine is running, movement of the
throttle lever will increase the engine speed.
Regulate the speed of the machine by vary-
ing the throttle position. Because the throttle
is spring-loaded, the machine will decelerate,
and the engine will return to an idle any time
the hand is removed from the throttle lever.
Before starting the engine, check the throt-
tle to be sure it is operating smoothly.
Make sure it returns to the idle position as
soon as the lever is released.
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.
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
4-4
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EBU00066
Speed limiter
WARNING
The speed limiter keeps the throttle from
fully opening, even when the throttle lever
is pushed to the maximum. Screwing in
the adjuster limits the maximum engine
power available and decreases the maxi-
mum speed of the ATV.
POTENTIAL HAZARD
Improper adjustment of the speed limit-
er and throttle.
WHAT CAN HAPPEN
The throttle cable could be damaged.
Improper throttle operation could re-
sult. You could lose control, have an ac-
cident or be injured.
HOW TO AVOID THE HAZARD
Do not turn the speed adjuster out more
than 12 mm (0.47 in). Always make sure
the throttle lever free play is adjusted to
3 ~ 5 mm (0.12 ~ 0.20 in). See page 8-16.
1. Locknut
2. Adjuster
a. 12 mm (0.47 in)
4-5
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EBU00070
EBU00073
Front brake lever
Rear brake pedal and lever
The front brake lever is located on the right
handlebar. Pull it toward the handlebar to
apply the front brake.
The brake pedal is located on the right side
of the machine and the brake lever is locat-
ed on the left handlebar. Push down on the
pedal or pull the lever toward the handle-
bar to apply the rear brake.
1. Front brake lever
1. Rear brake pedal
4-6
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1. Rear brake lever
4-7
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EBU00074
Parking brake
WARNING
Use the parking brake when you have to
start the engine or park the machine, espe-
cially on a slope. Apply the rear brake lever
and push down the lock plate to apply the
parking brake. Squeeze the rear brake le-
ver to release the parking brake.
POTENTIAL HAZARD
Improper use of the parking brake.
WHAT CAN HAPPEN
The ATV could start moving unexpect-
edly if the parking brake is not applied
before starting the engine. This could
cause loss of control or a collision.
The brake could overheat if you ride the
ATV without releasing the parking
brake. You could lose braking perfor-
mance which could cause an accident.
You could also wear out the brakes
prematurely.
HOW TO AVOID THE HAZARD
Always set the parking brake before
starting the engine.
1. Lock plate
Always be sure you have released the
parking brake before you begin to ride.
4-8
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EBU00083
EBU00085
Shift pedal
Drive select lever
This machine is equipped with a constant-
mesh 5-speed transmission. The shift ped-
al is located on the left side of the engine.
Neutral is at the bottom position.
The drive select lever is used for driving
the machine either forward or in reverse.
Refer to page 6-4 for drive select lever op-
eration.
1. Shift pedal
N. Neutral position
1. Drive select lever
4-9
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EBU00590
Recoil starter
WARNING
Firmly grasp the handle and pull slightly
until engagement can be felt. Then pull
forcefully, being careful not to pull the rope
all the way out.
POTENTIAL HAZARD
Starting the engine in gear and/or start-
ing the engine without setting the park-
ing brake.
WHAT CAN HAPPEN
The ATV could start to move unexpect-
edly, which could cause an accident.
HOW TO AVOID THE HAZARD
Put the transmission in neutral and set
the parking brake before starting the
engine.
1. Recoil starter
4-10
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EBU00092
Fuel tank cap
Remove the fuel tank cap by turning it
counterclockwise.
1. Fuel tank cap
4-11
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EBU00093
Fuel cock
The fuel cock supplies fuel from the fuel
tank to the carburetor.
The fuel cock has three positions.
OFF: With the lever in this position fuel
will not flow. Always turn the lever to
this position when the engine is not
running.
ON: With the lever in this position, fuel
flows to the carburetor. Normal
riding is done with the lever in this
position.
RES: This indicates reserve. If you run out
of fuel while riding, turn the lever to
this position. THEN FILL THE FUEL
TANK AT THE FIRST OPPORTUNITY.
After refuelling, return the fuel cock
lever to the “ON” position.
4-12
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EBU00094
Starter (choke)
Starting a cold engine requires a richer air-
fuel mixture. A separate starter circuit sup-
plies this mixture.
Move in direction a to turn on the starter
(choke).
Move in direction b to turn off the starter
(choke).
Refer to “Starting a cold engine” for prop-
er operation. (See page 6-1.)
1. Fully-open
3. Closed
2. Half open
A. Starter (choke)
4-13
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EBU00567
Seat
To remove the seat, pull the seat lock lever
upward and pull up the seat at the rear.
To install the seat, insert the projections on
the front of the seat into the seat holders
and push down on the seat at the rear.
1. Seat lock lever
NOTE:
Make sure that the seat is securely fitted.
4-14
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EBU00098
Storage box
Maximum load limit: 2 kg (4.4 lb)
CAUTION:
To protect from damage, do not put metal
products, like tools or sharply edged prod-
ucts directly in the storage box. If they
must be stored, wrap them in appropriate
cushion material.
4-15
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EBU00099
Front carrier
Maximum load limit: 30 kg (66 lb)
EBU00100
Rear carrier
Maximum load limit: 45 kg (99 lb)
a. Increase spring preload b. Decrease spring preload
EBU00634
Rear shock absorber adjustment
The spring preload can be adjusted to suit
the rider’s weight and riding conditions.
Adjust the spring preload as follows:
To increase the spring preload, turn the ad-
juster in direction a.
Standard position: B
A - Minimum (Soft)
E - Maximum (Hard)
To decrease the spring preload, turn the
adjuster in direction b.
EBU00112
WARNING
Indicates a potential hazard that could
result in serious injury or death.
4-16
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PRE-OPERATION CHECKS
Before using this machine, check the following points:
ITEM
ROUTINE
PAGE
• Check operation, condition and free play.
• Adjust if necessary.
Brakes
Fuel
5-3, 8-17 ~ 8-23
• Check fuel level.
• Fill with fuel if necessary.
E
5-5 ~ 5-6
• Check oil level.
• Fill with oil if necessary.
Engine oil
5-7, 8-5 ~ 8-8
Final gear oil
Throttle
• Check for leakage.
5-8, 8-9 ~ 8-10
5-8, 8-16
• Check for proper throttle cable operation.
5-9 ~ 5-12,
8-26 ~ 8-27
Wheels and tires
• Check tire pressure, wear and damage.
Fittings and Fasteners • Check all fittings and fasteners.
5-8
Lights
• Check for proper operation.
5-8, 8-32 ~ 8-33
• Check fluid level.
• Fill with distilled water if necessary.
Battery
5-8, 8-28 ~ 8-30
5-1
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WARNING
POTENTIAL HAZARD
5
Failure to inspect the ATV before oper-
ating.
Failure to properly maintain the ATV.
5
5
5
WHAT CAN HAPPEN
Increases the possibility of an accident
or equipment damage.
5
6
HOW TO AVOID THE HAZARD
7
Always inspect your ATV each time you
use it to make sure the ATV is in safe op-
erating condition.
Always follow the inspection and main-
tenance procedures and schedules de-
scribed in the Owner’s Manual.
8
9
50
55
55
55
55
5-2
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EBU00670*
Front and rear brakes
3. Brake fluid leakage
1. Brake levers and brake pedal
Check for correct free play in the rear
brake lever and that there is no free
play in the front brake lever. If the free
play is incorrect, adjust it. (See pages
8-17 ~ 8-23.)
Check to see if any brake fluid is leak-
ing out of the pipe joints or master cyl-
inder. Apply the brakes firmly for one
minute. If there is any leaking, have the
ATV inspected by a Yamaha dealer.
4. Brake operation
Check the operation of the levers and
pedal. They should move smoothly
and there should be a firm feeling
when the brakes are applied. If not,
have the ATV inspected by a Yamaha
dealer.
Test the brakes at slow speed after
starting out to make sure they are
working properly. If the brakes do not
provide proper braking performance,
inspect the brake pads for wear. (See
page 8-17.)
2. Brake fluid level
Check the brake fluid level.
Add fluid if necessary. (See pages 8-18
~ 8-19.)
Recommended brake fluid: DOT 4
5-3
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WARNING
POTENTIAL HAZARD
Riding with improperly operating
brakes.
WHAT CAN HAPPEN
You could lose braking ability, which
could lead to an accident.
HOW TO AVOID THE HAZARD
Always check the brakes at the start of
every ride. Do not ride the ATV if you
find any problem with the brakes. If a
problem cannot be corrected by the ad-
justment procedures provided in this
manual, have the ATV inspected by a
Yamaha dealer.
5-4
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EBU00126
Fuel
Gasohol
Make sure there is sufficient gasoline in the
tank.
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%. Gasohol containing methanol is not
recommended by Yamaha because it may
cause fuel system damage or vehicle per-
formance problems.
Recommended fuel:
UNLEADED FUEL
Fuel tank capacity:
Total:
12 L (2.64 Imp gal, 3.17 US gal)
Reserve:
1.6 L (0.35 Imp gal, 0.42 US gal)
Your Yamaha engine has been designed to
use regular unleaded gasoline with a
pump octane number ([R+M]/2) of 86 or
higher, or research octane number of 91 or
higher. If knocking or pinging occurs, use a
different brand of gasoline or premium un-
leaded fuel. Unleaded fuel will give you
longer spark plug life and reduced mainte-
nance cost. If unleaded gasoline is not
available, then leaded regular gasoline can
be used.
1. Filler tube
2. Fuel level
5-5
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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 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.
5-6
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EBU00441
Engine oil
CAUTION:
Make sure the engine oil is at the specified
level. Add oil as necessary. (See page 8-5 ~
8-8.)
Be sure to use motor oils that do not con-
tain anti-friction modifiers.
Passenger car motor oils (often labeled
“Energy Conserving”) contain anti-friction
additives which will cause clutch and/or
starter clutch slippage, resulting in re-
duced component life and poor engine
performance.
Recommended oil:
0°
10°
50°
70°
90° 110° 130°F
30°
YAMALUBE 4 (20W40) or SAE20W40
YAMALUBE 4 (10W30) or SAE10W30
SAE 5W30
Oil quantity:
–20° –10°
10°
20°
30°
0°
40°
50°C
Periodic oil change:
1.5 L (1.3 lmp qt, 1.6 US qt)
With oil filter replacement:
1.6 L (1.4 lmp qt, 1.7 US qt)
Total amount:
Recommended engine oil classification:
API Service SE, SF, SG type or higher
1.8 L (1.6 lmp qt, 1.9 US qt)
5-7
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EBU00145
EBU00152
Final gear oil
Fittings and Fasteners
Make sure the final gear oil is at the speci-
fied level. Add oil as necessary (see page
8-9 for details).
Always check the tightness of chassis fittings
and fasteners before a ride. Take the ma-
chine to a Yamaha dealer or refer to the Ser-
vice Manual for correct tightening torque.
Recommended oil:
SAE 80 API GL-4 Hypoid gear oil
EBU00153
Lights
If desired, an SAE 80W90 hypoid gear oil
may be used for all conditions.
Check the headlight and taillight to make
sure they are in working condition. Repair
as necessary for proper operation.
NOTE:
GL-4 is a quality and additive rating, GL-5
or GL-6 rated hypoid gear oils may also be
used.
EBU00155
Switches
Check the operation of the headlight switch,
engine stop switch and any other switches.
Repair as necessary for proper operation.
EBU00151
Throttle lever
Check to see that the throttle lever oper-
ates correctly. It must open smoothly and
spring back to idle position when released.
Repair as necessary for proper operation.
EBU00499
Battery
Check fluid level and fill if necessary. Use
only distilled water if refilling is necessary.
(See pages 8-28 ~ 8-30.)
5-8
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EBU00157
Tires
2. The tires should be set to the rec-
ommended pressure:
WARNING
● Recommended tire pressure
Front 20 kPa (0.20 kgf/cm2, 2.9 psi)
Rear 25 kPa (0.25 kgf/cm2, 3.6 psi)
● Check and adjust tire pressures when
the tires are cold.
● Tire pressures must be equal on both
sides.
3. Tire pressure below the minimum
specified could cause the tire to dis-
lodge from the rim under severe
riding conditions.
POTENTIAL HAZARD
Operating this ATV with improper tires,
or with improper or uneven tire pressure.
WHAT CAN HAPPEN
Use of improper tires on this ATV, or op-
eration of this ATV with improper or un-
even tire pressure, may cause loss of
control, increasing your risk of accident.
HOW TO AVOID THE HAZARD
1. The tires listed below have been ap-
proved by Yamaha Motor Co., Ltd.
for this model. Other tire combina-
The following are minimums:
Front 17 kPa (0.17 kgf/cm2, 2.5 psi)
Rear 22 kPa (0.22 kgf/cm2, 3.2 psi)
tions are not recommended.
ACE-01EACE-01E
Manufacturer
CARLISLE
Size
Type
TRAIL WOLF
KT 701
AT22 × 7–10
AT22 × 7–10
AT22 × 7–10
AT22 × 10–10
AT22 × 10–10
AT22 × 10–10
Front
Rear
DUNLOP
CHENG SHIN
CARLISLE
M 905
TRAIL WOLF
KT 705
DUNLOP
CHENG SHIN
M 906
5-9
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4. Use no more than the following
pressures when seating the tire
beads.
Front 250 kPa (2.5 kgf/cm2, 36 psi)
Rear 250 kPa (2.5 kgf/cm2, 36 psi)
Higher pressures may cause the tire
to burst. Inflate the tires very slowly
and carefully. Fast inflation could
cause the tire to burst.
5-10
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EBU00159
How to measure tire pressure
Use the low-pressure tire gauge.
NOTE:
The low-pressure tire gauge is included as
standard equipment. Make two measure-
ments of the tire pressure and use the sec-
ond reading. Dust or dirt in the gauge
could cause the first reading to be incor-
rect.
1. Low-pressure tire gauge
Set pressure with tires cold.
Set tire pressures to the following specifi-
cations:
ACE-02EACE-02E
Recommended
Minimum
17 kPa
Maximum
23 kPa
pressure
20 kPa
2
2
2
Front
Rear
(0.20 kgf/cm , (0.17 kgf/cm , (0.23 kgf/cm ,
2.9 psi)
2.5 psi)
3.3 psi)
25 kPa
22 kPa
28 kPa
2
2
2
(0.25 kgf/cm , (0.22 kgf/cm , (0.28 kgf/cm ,
3.6 psi) 3.2 psi) 4.0 psi)
5-11
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EBU00160
Tire wear limit
When the tire groove decreases to 3 mm
(0.12 in) due to wear, replace the tire.
a. 3 mm (0.12 in)
5-12
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EBU00161
EBU00163
Starting a cold engine
OPERATION
WARNING
WARNING
Indicates a potential hazard that could
result in serious injury or death.
POTENTIAL HAZARD
Freezing control cables in cold weather.
WHAT CAN HAPPEN
You could be unable to control the ATV,
which could lead to an accident or colli-
sion.
WARNING
POTENTIAL HAZARD
Operating ATV without being familiar
with all controls.
HOW TO AVOID THE HAZARD
When riding in cold weather, always
make sure all control cables work
smoothly before you begin riding.
WHAT CAN HAPPEN
Loss of control, which could cause an
accident or injury.
1. Set the parking brake.
HOW TO AVOID THE HAZARD
2. Turn the fuel cock to “ON”.
3. Turn the main switch to “ON” and the
engine stop switch to “RUN”.
Read the Owner’s Manual carefully. If
there is a control or function you do not
understand, ask your Yamaha dealer.
4. Shift the transmission into neutral.
6-1
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Position 3 : Cold engine start-
ambient temperature above
NOTE:
● When the transmission is in neutral,
the neutral indicator light should come
on. If the light does not come on, ask a
Yamaha dealer to inspect it.
6
25 ˚C (80 ˚F) and warm engine
start position.
6
6
● The engine can be started in any gear
if the rear brake lever is applied. How-
ever, it is recommended to shift into
neutral before starting the engine.
6
6
6
5. Use the starter (choke) in reference to
the figure:
Position 1 : Cold engine start-
ambient temperature below
5 ˚C (40 ˚F).
Position 2 : Cold engine start-
ambient temperature at 0 ˚C
(30 ˚F) ~ 30 ˚C (90˚ F) and
warming up position.
7
8
9
60
66
66
1. Fully open
3. Closed
2. Half open
a. Starter (choke)
6. Completely close the throttle lever and
start the engine by pushing the start
switch.
66
66
6-2
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NOTE:
CAUTION:
● If the engine fails to start, release the
start switch, then push the start switch
again. Pause a few seconds before the
next attempt. Each cranking should be
as short as possible to preserve bat-
tery energy. Do not crank the engine
more than 10 seconds on each at-
tempt.
See the “Engine break-in” section prior to
operating engine for the first time.
EBU00180
Starting a warm engine
To start a warm engine, refer to the “Start-
ing a cold engine” section. The starter
(choke) should not be used. The throttle
should be opened slightly.
● If the battery is discharged, pull the re-
coil starter to start the engine.
7. If the engine is started at position 1,
the starter (choke) should be returned
to position 2 (half-open) to warm up
the engine. If the engine is started at
position 2, keep it at this position to
warm up the engine.
8. Continue warming up the engine until
it idles smoothly and return the starter
(choke) to position 3 (closed) before
riding.
EBU00182
Warming up
To get maximum engine life, always warm
up the engine before starting off. Never ac-
celerate hard with a cold engine! To see
whether or not the engine is warm, check if
it responds to the throttle normally with
the starter (choke) turned off.
6-3
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EBU00185
Drive select lever operation and reverse
driving
CAUTION:
Before shifting, stop the machine and re-
turn the throttle lever to its closed posi-
tion. Otherwise the transmission may be
damaged.
NOTE:
1. Drive select lever
a. Forward
2. Lock release button
b. Reverse
When shifting into reverse, the transmis-
sion must be in first gear.
NOTE:
When in reverse, the reverse indicator light
should be on. If the light does not come on,
ask a Yamaha dealer to inspect the
machine.
1. Bring the machine to a complete stop
and return the throttle lever to the
closed position.
2. Apply the rear brake pedal.
3. Shift the transmission into first gear.
4. While pulling the lock release button,
move the drive select lever toward the
rear until it completely stops.
5. Check behind you for people or obsta-
cles, then release the rear brake pedal.
6. Open the throttle lever gradually and
continue to watch to the rear while
backing.
6-4
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EBU00201
Shifting
WARNING
This model has a 5-speed forward and
1-speed reverse transmission with centrif-
ugal automatic clutch. The transmission al-
lows you to control the amount of power
you have available at a given speed or for
starting accelerating, climbing, etc. To shift
into neutral, return the throttle lever to its
original position and repeatedly depress
the shift pedal until it stops.
POTENTIAL HAZARD
Improperly operating in reverse.
WHAT CAN HAPPEN
You could hit an obstacle or person be-
hind you, resulting in serious injury.
HOW TO AVOID THE HAZARD
When you shift into reverse, make sure
there are no obstacles or people behind
you. When it is safe to proceed, go
slowly.
1. Shift pedal
N. Neutral position
6-5
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4. Once the machine has attained ade-
quate speed, release the throttle lever.
5. Shift into second gear and release the
shift pedal.
6. Open the throttle gradually.
7. Follow the same procedure when
shifting to the next higher gear.
CAUTION:
Do not coast for long periods with the en-
gine off, and do not tow the machine a
long distance. Even with gears in neutral,
the transmission is only properly lubricat-
ed when the engine is running. Inadequate
lubrication may damage the transmission.
WARNING
POTENTIAL HAZARD
EBU00205
Opening the throttle before releasing
the shift pedal.
To start out and accelerate:
1. Release the throttle lever.
WHAT CAN HAPPEN
The machine could wheelie. This would
increase the chance of an accident, in-
cluding overturn.
CAUTION:
Always close the throttle while shifting
gears. Otherwise, damage to the engine
and drive train may result.
HOW TO AVOID THE HAZARD
Release the shift pedal before opening
the throttle. Open the throttle gradually.
2. Shift into first gear and release the
shift pedal.
3. Open the throttle gradually.
6-6
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EBU00207
EBU00209
To decelerate:
Engine break-in
When slowing down or stopping, release
the throttle and apply the brakes smoothly
and evenly. As you slow down, shift to a
lower gear. Be sure that the engine has suf-
ficiently slowed before engaging a lower
gear. Improper use of the brakes or shifting
can cause the tires to lose traction, reduc-
ing control and increasing the possibility of
an accident.
There is never a more important period in
the life of your machine than the period be-
tween zero and 20 hours.
For this reason, we ask that you carefully
read the following material. Because the
engine is brand new, you must not put an
excessive load on it for the first several
hours of running. During the first 20 hours,
the various parts in the engine wear and
polish themselves to the correct operating
clearances.
During this period, prolonged full throttle
operation or any condition which might re-
sult in excessive engine heating must be
avoided. However, momentary (2 ~ 3 sec-
onds maximum) full throttle operation un-
der load does not harm the engine. Each
full throttle acceleration sequence should
be followed with a substantial rest period
for the engine by cruising at lower r/min so
the engine can rid itself of the temporary
build up of heat.
WARNING
POTENTIAL HAZARD
Engaging a lower gear when the engine
speed is too high.
WHAT CAN HAPPEN
The wheels could stop rotating. This
could cause loss of control, an accident
and injury. It could also cause engine or
drive train damage.
HOW TO AVOID THE HAZARD
Make sure the engine has sufficiently
slowed before shifting to a lower gear.
6-7
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EBU00211
If any abnormality is noticed during this
period, consult a Yamaha dealer.
1. 0 ~ 10 hours:
Avoid continuous operation above
half throttle. Allow a cooling off period
of five to ten minutes after every hour
of operation. Vary the speed of the
machine from time to time. Do not op-
erate it at one set throttle position.
2. 10 ~ 20 hours:
Parking
When parking, stop the engine and shift
into neutral. Turn the fuel cock to “OFF”
and apply the parking brake.
Avoid prolonged operation above
3/4 throttle. Rev the machine freely
through the gears but do not use full
throttle at any time.
1. Lock plate
3. After break-in:
Avoid prolonged full throttle opera-
tion. Vary speeds occasionally.
6-8
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EBU00219
Parking on a slope
1. Bring the machine to a stop by apply-
ing the brakes in low gear.
2. Stop the engine.
3. With the rear brake lever and pedal ap-
plied, apply the parking brake and
slowly release the rear brake pedal.
WARNING
POTENTIAL HAZARD
Parking on a hill or other incline.
WHAT CAN HAPPEN
The ATV could roll out of control, in-
creasing the chance of an accident.
HOW TO AVOID THE HAZARD
Avoid parking on hills or other inclines.
If you must park on an incline, put the
machine in low gear, apply the parking
brake, and block the front and rear
wheels with rocks or other objects.
Do not park the ATV at all on hills that
are so steep you could not walk up
them easily.
6-9
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EBU00221
Accessories and loading
● Accessories should be rigidly and se-
curely mounted. An accessory which
can shift position or come off while you
are riding could affect your ability to
control the ATV.
● Do not mount an accessory where it
could interfere with your ability to con-
trol the ATV. Examples include (but are
not limited to) a heavy or bulky object at-
tached to the handlebars which could
make steering difficult, an accessory that
limits your ability to move around on the
seat, or one that limits your view.
EBU00222
Accessories
Accessories can affect the handling and
control of your ATV. Keep the following in
mind when considering an accessory or
operating an ATV which has accessories.
● Choose only accessories designed for
your ATV. Your Yamaha dealer has a va-
riety of genuine Yamaha accessories.
Other accessories may also be available
on the market. However, it is not possi-
ble for Yamaha to test all non-Yamaha
accessories, nor have any control over
the quality or suitability of them. Choose
a genuine Yamaha accessory, or one
that is equivalent in design and quality.
● Use extra caution when riding an ATV
with accessories. The ATV may handle dif-
ferently than it does without accessories.
6-10
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EBU00233
Loading
● Do not exceed the maximum tongue
weight. You can measure tongue weight
with a bathroom scale. Put the tongue of
the loaded trailer on the scale with the
tongue at hitch height. Adjust the load in
the trailer, if necessary, to reduce the
weight on hitch.
● If you are carrying cargo and towing a
trailer, include the tongue weight in the
maximum vehicle load limit.
● Load cargo on the carrier as close to the
center of the vehicle as possible. Put car-
go at the front of the rear carrier. Center
the load from side to side.
● Tie down cargo securely to the carriers.
Make sure cargo in the trailer cannot
move around. A shifting load can cause
an accident.
Cargo or a trailer can change the stability
and handling of an ATV.
You must use common sense and good
judgement when carrying cargo or towing
a trailer. Keep the following points in mind:
● Never exceed the weight limits shown.
An overloaded ATV can be unstable.
MAXIMUM LOADING LIMIT
● Vehicle loading limit (total weight of car-
go, rider and accessories, and tongue
weight): 165 kg (364 lb)
● Front carrier: 30 kg (66 lb)
● Rear carrier: 45 kg (99 lb)
● Storage box: 2 kg (4.4 lb)
● Trailer hitch:
Pulling load (total weight of trailer and
cargo): 330 kg (728 lb)
Tongue weight (vertical weight on trail-
er hitch point): 15 kg (33 lb)
● Make sure the load does not interfere
with controls or your ability to see where
you are going.
6-11
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● Ride more slowly than you would with-
out a load. The more weight you carry,
the slower you should go. Although con-
ditions vary, it is good practice not to ex-
ceed 2nd gear whenever you are
carrying heavier loads or when towing a
trailer.
WARNING
POTENTIAL HAZARD
Overloading this ATV or carrying or
towing cargo improperly.
WHAT CAN HAPPEN
Could cause changes in vehicle handling
which could lead to an accident.
● Allow more braking distance. A heavier
vehicle takes longer to stop.
HOW TO AVOID THE HAZARD
● Avoid making sharp turns unless at very
slow speeds.
● Avoid hills and rough terrain. Choose
terrain carefully. Added weight affects
the stability and handling of the ATV.
Never exceed the stated load capacity
for this ATV. Cargo should be properly
distributed and securely attached. Re-
duce speed when carrying cargo or pull-
ing a trailer. Allow greater distance for
braking.
6-12
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E
EBU00543
WARNING
Indicates a potential hazard that could
result in serious injury or death.
6-13
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Riding YourATV
Riding
Your
ATV
7
7-1
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7-2
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WARNING
Indicates a potential hazard that could
result in serious injury or death.
GETTING TO KNOW YOUR ATV
safely. Before you begin to ride, be sure
you have read this Owner’s Manual com-
pletely and understand the operation of
the controls. Pay particular attention to the
safety information on pages 2-1 ~ 2-6.
Please also read all caution and warning la-
bels on your ATV.
This ATV is mainly for utility use, but may
also be used for recreation. This section,
Riding your ATV, provides general ATV
riding instructions for recreational riding.
The skills and techniques described in this
section, however, are appropriate for all
types of riding. Riding your ATV requires
special skills acquired through practice
over a period of time. Take the time to
learn the basic techniques well before at-
tempting more difficult maneuvers.
Riding your new ATV can be a very enjoy-
able activity, providing you with hours of
pleasure. But it is essential to familiarize
yourself with the operation of the ATV to
achieve the skill necessary to enjoy riding
7-3
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RIDE WITH CARE AND GOOD
JUDGEMENT
HOW TO AVOID THE HAZARD
Beginning and inexperienced operators
should complete the certified training
course offered by Yamaha. They should
then regularly practice the skills learned
in the course and the operating tech-
niques described in this Owner’s Manu-
al.
For more information about the training
course, contact an authorized ATV deal-
er or call 1-800-447-4700.
Get training if you are inexperienced.
Beginners should get training from a certi-
fied instructor.
Become familiar with this ATV at slow
speeds first, even if you are an experienced
operator. Do not attempt to operate at
maximum performance until you are total-
ly familiar with the machine’s handling and
performance characteristics.
WARNING
Riding your machine requires skills ac-
quired through practice over a period of
time.
Take the time to learn the basic techniques
well before attempting more difficult
maneuvers.
POTENTIAL HAZARD
Operating this ATV without proper in-
struction.
WHAT CAN HAPPEN
The risk of an accident is greatly in-
creased if the operator does not know
how to operate the ATV properly in dif-
ferent situations and on different types
of terrain.
7-4
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Not recommended for children under
16 years of age.
WARNING
POTENTIAL HAZARD
Failure to follow the age recommenda-
tions for this ATV.
WHAT CAN HAPPEN
Use by children of ATVs that are not rec-
ommended for their age can lead to se-
vere injury or death of the child.
HOW TO AVOID THE HAZARD
A child under 16 should never operate
an ATV with engine size greater than
90cc.
7-5
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This machine is designed to carry operator
and cargo only - passengers prohibited.
WARNING
POTENTIAL HAZARD
Carrying a passenger on this ATV.
WHAT CAN HAPPEN
Greatly reduces your ability to balance
and control this ATV. Could cause an ac-
cident, resulting in harm to you and/or
your passenger.
HOW TO AVOID THE HAZARD
Never carry a passenger. The long seat
is to allow the operator to shift position
as needed during operation. It is not for
carrying passengers.
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Apparel
Operating without protective clothing
increases your chances of severe injury
in the event of an accident.
WARNING
POTENTIAL HAZARD
HOW TO AVOID THE HAZARD
Always wear an approved motorcycle
helmet that fits properly.
You should also wear:
eye protection
Operating this ATV without wearing an
approved motorcycle helmet, eye pro-
tection and protective clothing.
WHAT CAN HAPPEN
Operating without
an approved motor-
cycle helmet increas-
es your chances of a
severe head injury or
death in the event of
an accident.
(goggles or face shield)
gloves
boots
long-sleeved shirt or jacket
long pants
Operating without
eye protection can
result in an accident and increases your
chances of a severe injury in the event of
an accident.
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Do not operate after consuming alcohol or
drugs.
Operator’s performance capability is re-
duced by the influence of alcohol or drugs.
WARNING
POTENTIAL HAZARD
Operating this ATV after consuming al-
cohol or drugs.
WHAT CAN HAPPEN
Could seriously affect your judgment.
Could cause you to react more slowly.
Could affect your balance and percep-
tion.
Could result in an accident.
HOW TO AVOID THE HAZARD
Never consume alcohol or drugs before
or while driving this ATV.
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Pre-operation checks
WARNING
Always perform the pre-operation checks
listed on page 5-1 before riding for safety
and proper care of the machine.
POTENTIAL HAZARD
Operating this ATV with improper tires,
or with improper or uneven tire pres-
sure.
WARNING
POTENTIAL HAZARD
WHAT CAN HAPPEN
Failure to inspect the ATV before oper-
ating.
Failure to properly maintain the ATV.
Use of improper tires on this ATV, or op-
eration of this ATV with improper or un-
even tire pressure, may cause loss of
control, increasing your risk of an acci-
dent.
WHAT CAN HAPPEN
Increases the possibility of an accident
or equipment damage.
HOW TO AVOID THE HAZARD
Always use the size and type tires spec-
ified in the Owner’s Manual for this ve-
hicle on pages 5-9 ~ 5-10.
Always maintain proper tire pressure as
described in the Owner’s Manual on
page 5-11.
HOW TO AVOID THE HAZARD
Always inspect your ATV each time you
use it to make sure the ATV is in safe op-
erating condition.
Always follow the inspection and main-
tenance procedures and schedules de-
scribed in the Owner’s Manual.
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Speed limiter
WARNING
For riders inexperienced with this model,
this model is equipped with a speed limiter
in the throttle lever housing. The speed
limiter limits the power and top speed of
the machine. Turning the screw in decreas-
es top speed, and turning it out increases
top speed.
Indicates a potential hazard that could
result in serious injury or death.
Do not operate at speeds too fast for your
skills or the conditions.
WARNING
POTENTIAL HAZARD
Operating this ATV at speeds too fast
for your skills or the conditions.
WHAT CAN HAPPEN
Increases your chances of losing control
of the ATV, which can result in an acci-
dent.
HOW TO AVOID THE HAZARD
Always go at a speed that is proper for
the terrain, visibility and operating con-
ditions, and your experience.
1. Locknut
2. Adjuster
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Loading and accessories
WARNING
Use extra caution when riding the machine
with additional loads, such as accessories
or cargo. The machine’s handling may be
adversely affected. Reduce your speed
when adding additional loads.
POTENTIAL HAZARD
Overloading this ATV or carrying or
towing cargo improperly.
WHAT CAN HAPPEN
Could cause changes in vehicle handling
which could lead to an accident.
MAXIMUM LOADING LIMIT
● Vehicle loading limit (total weight of car-
go, rider and accessories, and tongue
weight): 165 kg (364 lb)
● Front carrier: 30 kg (66 lb)
● Rear carrier: 45 kg (99 lb)
● Storage box: 2 kg (4.4 lb)
● Trailer hitch:
HOW TO AVOID THE HAZARD
Never exceed the stated load capacity
for this ATV.
Cargo should be properly distributed
and securely attached.
Reduce speed when carrying cargo or
pulling a trailer. Allow greater distance
for braking.
Always follow the instructions in your
Owner’s Manual for carrying cargo or
pulling a trailer.
Pulling load (total weight of trailer and
cargo): 330 kg (728 lb)
Tongue weight (vertical weight on trail-
er hitch point): 15 kg (33 lb)
7-11
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During operation
WARNING
Always keep your feet on the footboards
during operation. Otherwise your feet may
contact the rear wheels.
POTENTIAL HAZARD
Removing hands from handlebars or
feet from footboards during operation.
WHAT CAN HAPPEN
Removing even one hand or foot can re-
duce your ability to control the ATV or
could cause you to lose your balance
and fall off of the ATV. If you remove a
foot from a footboard, your foot or leg
may come into contact with the rear
wheels, which could injure you or cause
an accident.
HOW TO AVOID THE HAZARD
Always keep both hands on the handle-
bars and both feet on the footboards of
your ATV during operation.
7-12
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Avoid wheelies and jumping. You may
lose control of the machine or overturn.
WARNING
POTENTIAL HAZARD
Attempting wheelies, jumps, and other
stunts.
WHAT CAN HAPPEN
Increases the chance of an accident, in-
cluding an overturn.
HOW TO AVOID THE HAZARD
Never attempt stunts, such as wheelies
or jumps. Don’t try to show off.
7-13
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Modifications
WARNING
POTENTIAL HAZARD
Operating this ATV with improper mod-
ifications.
WHAT CAN HAPPEN
Improper installation of accessories or
modification of this vehicle may cause
changes in handling which in some situ-
ations could lead to an accident.
HOW TO AVOID THE HAZARD
Never modify this ATV through improp-
er installation or use of accessories. All
parts and accessories added to this ve-
hicle should be genuine Yamaha or
equivalent components designed for
use on this ATV and should be installed
and used according to instructions. If
you have questions, consult an autho-
rized ATV dealer.
7-14
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Exhaust system
The exhaust system on the machine is very
hot during and following operation. To
prevent burns, avoid touching the exhaust
system. Park the machine in a place where
pedestrians or children are not likely to
touch it.
WARNING
POTENTIAL HAZARD
Hot exhaust system.
WHAT CAN HAPPEN
Someone touching the exhaust system
during or after operation could be
burned.
HOW TO AVOID THE HAZARD
Do not touch the hot exhaust system.
Do not park the machine in a place
where others might be likely to touch it.
7-15
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BE CAREFUL WHERE YOU RIDE
This machine is designed for off-road use
only. Riding on paved surfaces can cause
loss of control.
WARNING
POTENTIAL HAZARD
Operating this ATV on paved surfaces.
WHAT CAN HAPPEN
ATVs are designed for off-road use only.
Paved surfaces may seriously affect
handling and control of the ATV, and
may cause the vehicle to go out of con-
trol.
HOW TO AVOID THE HAZARD
Always avoid paved surfaces, including
sidewalks, driveways, parking lots and
streets.
7-16
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Do not ride on any public road, street, or
highway.
Riding on public roads can result in colli-
sions with other vehicles.
WARNING
POTENTIAL HAZARD
Operating this ATV on public streets,
roads or highways.
WHAT CAN HAPPEN
You can collide with another vehicle.
HOW TO AVOID THE HAZARD
Never operate this ATV on any public
street, road or highway, even a dirt or
gravel one.
In many states it is illegal to operate
ATVs on public streets, roads and high-
ways.
7-17
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Know the terrain where you ride. Ride cau-
tiously in unfamiliar areas.
Stay alert for holes, rocks, or roots in the
terrain, and other hidden hazards which
may cause the machine to upset.
WARNING
POTENTIAL HAZARD
Failure to use extra care when operating
this ATV on unfamiliar terrain.
WHAT CAN HAPPEN
You can come upon hidden rocks,
bumps, or holes, without enough time
to react.
Could result in the ATV overturning or
going out of control.
HOW TO AVOID THE HAZARD
Go slowly and be extra careful when op-
erating on unfamiliar terrain.
Always be alert to changing terrain con-
ditions when operating the ATV.
7-18
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WARNING
POTENTIAL HAZARD
Failure to use extra care when operating
on excessively rough, slippery or loose
terrain.
WHAT CAN HAPPEN
Could cause loss of traction or vehicle
control, which could result in an acci-
dent, including an overturn.
HOW TO AVOID THE HAZARD
Do not operate on excessively rough,
slippery or loose terrain until you have
learned and practiced the skills neces-
sary to control the ATV on such terrain.
Always be especially cautious on these
kinds of terrain.
7-19
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When riding in an area where you might
not easily be seen, such as desert terrain,
mount a caution flag on the machine. DO
NOT use the flag pole bracket as a trailer
hitch.
WHAT CAN HAPPEN
You could be in a collision. You could be
injured.
HOW TO AVOID THE HAZARD
Always mount a caution flag on the ma-
chine to make you more visible. Watch
carefully for other vehicles.
Do not ride in areas posted “no trespass-
ing”. Do not ride on private property with-
out getting permission.
WARNING
POTENTIAL HAZARD
Operating in areas where you might not
be seen by other off-road vehicles.
7-20
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Select a large, flat area off-road to become
familiar with your ATV. Make sure that this
area is free of obstacles and other riders.
You should practice control of the throttle,
brakes, shifting procedures, and turning
techniques in this area before trying more
difficult terrain. Always avoid riding on
paved surfaces: the ATV is designed for
off-road use only, and handling maneu-
vers are more difficult to perform on pave-
ment.
With the engine idling, lift the shift pedal to
the 1st gear position and then release the
parking brake. Apply the throttle slowly
and smoothly. The centrifugal clutch will
engage and you will start to accelerate.
Once the ATV has attained adequate
speed, release the throttle and lift the shift
pedal to the 2nd gear position. Release the
shift pedal and apply the throttle smoothly.
Use this same procedure as you move into
the higher gears. Be sure to coordinate the
use of the throttle and shift pedal properly.
If the throttle is applied too abruptly or if
the throttle is not released during shifting,
or if the shift pedal is not released before
applying the throttle, the front wheels may
lift off the ground resulting in a loss of di-
rectional control. Avoid higher speeds until
you are thoroughly familiar with the opera-
tion of your ATV.
Set the parking brake and follow the in-
struction on page 6-1 to start the engine.
Once it has warmed up you are ready to
begin riding your ATV. As you get on the
ATV, be sure not to accidentally move the
shift pedal. Remember that the engine and
exhaust pipe will be hot when riding and
afterwards; do not allow skin or clothing to
come in contact with these components.
7-21
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WARNING
CAUTION:
POTENTIAL HAZARD
Engaging a lower gear when the engine
speed is too high.
Do not shift gears without releasing the
throttle. Damage to the engine or drive
train may occur.
WHAT CAN HAPPEN
When slowing down or stopping, release
the throttle and apply the brakes smoothly
and evenly. As you slow down, shift to a
lower gear. Be sure that the engine has suf-
ficiently slowed before engaging a lower
gear. Improper use of the brakes or shifting
can cause the tires to lose traction, reduc-
ing control and increasing the possibility of
an accident.
The wheels could stop rotating. This
could cause loss of control, an accident
and injury. It could also cause engine or
drive train damage.
HOW TO AVOID THE HAZARD
Make sure the engine has sufficiently
slowed before shifting to a lower gear.
7-22
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TURNING YOUR ATV
HOW TO AVOID THE HAZARD
Always follow proper procedures for
turning as described in this Owner’s
Manual.
Practice turning at low speeds before
attempting to turn at faster speeds. Do
not turn at speeds too fast for your skills
or the conditions.
To achieve maximum traction while riding
off-road, the two rear wheels are mounted
solidly on one axle and turn together at the
same speed. Therefore, unless the wheel
on the inside of the turn is allowed to slip
or lose some traction, the ATV will resist
turning. A special turning technique must
be used to allow the ATV to make turns
quickly and easily. It is essential that this
skill be learned first at low speed.
As you approach a curve, slow down and
begin to turn the handlebars in the desired
direction. As you do so, put your weight on
the footboard to the outside of the turn
(opposite your desired direction) and lean
your upper body into the turn. Use the
throttle to maintain an even speed through
the turn. This maneuver will let the wheel
on the inside of the turn slip slightly, allow-
ing the ATV to make the turn properly.
WARNING
POTENTIAL HAZARD
Turning improperly.
WHAT CAN HAPPEN
ATV could go out of control, causing a
collision or overturn.
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Once you have learned this technique you
should be able to perform it at higher
speeds or in tighter curves.
Improper riding procedures such as abrupt
throttle changes, excessive braking, incor-
rect body movements, or too much speed
for the sharpness of the turn may cause
the ATV to tip. If the ATV begins to tip over
to the outside while negotiating a turn,
lean more to the inside. It may also be nec-
essary to gradually let off on the throttle
and steer to the outside of the turn to avoid
tipping over.
This procedure should be practiced at slow
speed many times in a large off-road area
with no obstacles. If an incorrect technique
is used, your ATV may continue to go
straight. If the ATV doesn’t turn, come to a
stop and then practice the procedure
again. If the riding surface is slippery or
loose, it may help to position more of your
weight over the front wheels by moving
forward on the seat.
Remember: Avoid higher speeds until you
are thoroughly familiar with the operation
of your ATV.
7-24
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CLIMBING UPHILL
HOW TO AVOID THE HAZARD
Never operate the ATV on hills too
steep for the ATV or for your abilities.
Practice on smaller hills before attempt-
ing large hills.
Use proper riding techniques to avoid ve-
hicle overturns on hills. Be sure that you
can maneuver your ATV well on flat
ground before attempting any incline and
then practice riding first on gentle slopes.
Try more difficult climbs only after you
have developed your skill. In all cases
avoid inclines with slippery or loose sur-
faces, or obstacles that might cause you to
lose control.
It is important when climbing a hill to make
sure that your weight is transferred for-
ward on the ATV. This can be accom-
plished by leaning forward and, on steeper
inclines, standing on the footboards and
leaning forward over the handlebars.
WARNING
POTENTIAL HAZARD
Operating on excessively steep hills.
WHAT CAN HAPPEN
The vehicle can overturn more easily on
extremely steep hills than on level sur-
faces or small hills.
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WARNING
An obstacle, a sharp drop, or another
vehicle or person could be on the other
side of the hill.
POTENTIAL HAZARD
Climbing hills improperly.
WHAT CAN HAPPEN
Could cause loss of control or cause the
ATV to overturn.
HOW TO AVOID THE HAZARD
Always follow proper procedures for
climbing hills as described in this Own-
er’s Manual.
Always check the terrain carefully be-
fore you start up any hill.
Never climb hills with excessively slip-
pery or loose surfaces.
Shift your weight forward.
Never open the throttle suddenly or
make sudden gear changes.
The ATV could flip over backwards.
Never go over the top of any hill at high
speed.
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If you are climbing a hill and you find that
you have not properly judged your ability
to make it to the top, you should turn the
ATV around while you still have forward
motion (provided you have the room to do
so) and go down the hill.
When crossing the side of a hill:
Always follow proper procedures as de-
scribed in the Owner’s Manual.
Avoid hills with excessively slippery or
loose surfaces.
Shift your weight to the uphill side of
the ATV.
WARNING
POTENTIAL HAZARD
Improperly crossing hills or turning on
hills.
WHAT CAN HAPPEN
Could cause loss of control or cause
ATV to overturn.
HOW TO AVOID THE HAZARD
Never attempt to turn the ATV around
on any hill until you have mastered the
turning technique as described in the
Owner’s Manual on level ground. Be
very careful when turning on any hill.
Avoid crossing the side of a steep hill if
possible.
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If your ATV has stalled or stopped and you
believe you can continue up the hill, restart
carefully to make sure you do not lift the
front wheels which could cause you to lose
control. If you are unable to continue up
the hill, dismount the ATV on the uphill
side. Physically turn the ATV around and
then descend the hill.
WARNING
POTENTIAL HAZARD
Stalling, rolling backwards or improper-
ly dismounting while climbing a hill.
WHAT CAN HAPPEN
Could result in ATV overturning.
HOW TO AVOID THE HAZARD
Use proper gear and maintain steady
speed when climbing a hill.
If you start to roll backwards, DO NOT use
the rear brake to stop or try to put the ATV
in gear. The ATV could easily tip over back-
wards. Instead, dismount the ATV immedi-
ately on the uphill side.
If you lose all forward speed:
Keep weight uphill.
Apply the brakes.
Lock parking brake, after you are
stopped.
If you begin rolling backwards:
Keep weight uphill.
Never apply the rear brake while roll-
ing backwards.
Apply the front brake.
When fully stopped, apply rear brake
as well, and then lock parking brake.
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Dismount on uphill side or to a side if
pointed straight uphill. Turn the ATV
around and remount, following the pro-
cedure described in the Owner’s Manu-
al.
7-29
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RIDING DOWNHILL
WARNING
When riding your ATV downhill, shift your
weight as far to the rear and uphill side of
the ATV as possible. Move back on the seat
and sit with your arms straight. Choose a
low gear which will allow the engine com-
pression to do most of the braking for you.
Improper braking may cause a loss of trac-
tion.
Use caution while descending a hill with
loose or slippery surfaces. Braking ability
and traction may be adversely affected by
these surfaces. Improper braking may also
cause a loss of traction.
POTENTIAL HAZARD
Going down a hill improperly.
WHAT CAN HAPPEN
Could cause loss of control or cause
ATV to overturn.
HOW TO AVOID THE HAZARD
Always follow proper procedures for
going down hills as described in this
Owner’s Manual. Note: a special tech-
nique is required when braking as you
go down a hill.
Always check the terrain carefully be-
fore you start down any hill.
Whenever possible, ride your ATV straight
downhill. Avoid sharp angles which could
allow the ATV to tip or roll over. Carefully
choose your path and ride no faster than
you will be able to react to obstacles which
may appear.
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.
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CROSSING A SLOPE
If your ATV does begin to tip over, gradual-
ly steer in the downhill direction if there
are no obstacles in your path. As you re-
gain proper balance, gradually steer again
in the direction you wish to travel.
Traversing a sloping surface on your ATV
requires you to properly position your
weight to maintain proper balance. Be sure
that you have learned the basic riding skills
on flat ground before attempting to cross a
sloping surface. Avoid slopes with slippery
surfaces or rough terrain that may upset
your balance.
WARNING
POTENTIAL HAZARD
Improperly crossing hills or turning on
hills.
As you travel across a slope, lean your
body in the uphill direction. It may be nec-
essary to correct the steering when riding
on loose surfaces by pointing the front
wheels slightly uphill. When riding on
slopes be sure not to make sharp turns ei-
ther up or down hill.
WHAT CAN HAPPEN
Could cause loss of control or cause
ATV to overturn.
HOW TO AVOID THE HAZARD
Never attempt to turn the ATV around
on any hill until you have mastered the
turning technique as described in the
Owner’s Manual on level ground. Be
very careful when turning on any hill.
Avoid crossing the side of a steep hill if
possible.
7-32
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When crossing the side of a hill:
Always follow proper procedures as de-
scribed in the Owner’s Manual.
Avoid hills with excessively slippery or
loose surfaces.
Shift your weight to the uphill side of
the ATV.
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CROSSING THROUGH SHALLOW WATER
The ATV can be used to cross slow mov-
ing, shallow water of up to a maximum of
35 cm (14 inches) in depth. Before entering
the water, choose your path carefully. En-
ter where there is no sharp drop off, and
avoid rocks or other obstacles which may
be slippery or upset the ATV. Drive slowly
and carefully.
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.
WARNING
POTENTIAL HAZARD
Operating this ATV through deep or fast
flowing water.
WHAT CAN HAPPEN
Tires may float, causing loss of traction
and loss of control, which could lead to
an accident.
HOW TO AVOID THE HAZARD
Never operate this ATV in fast flowing
water or in water deeper than that spec-
ified in your Owner’s Manual.
7-34
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Test your brakes after leaving the water.
Do not continue to ride your ATV without
verifying that you have regained proper
braking ability.
CAUTION:
After riding your ATV in water, be sure to
drain the trapped water by removing the
check hose at the bottom of the air filter
case. Wash the ATV in fresh water if it has
been operated in salt water or muddy con-
ditions.
1. Check hose
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RIDING OVER ROUGH TERRAIN
WARNING
Riding over rough terrain should be done
with caution. Look out for obstacles which
could cause damage to the ATV or could
lead to an upset or accident. Be sure to
keep your feet firmly mounted on the foot-
boards at all times. Avoid jumping the ATV
as loss of control and damage to the ATV
may result.
POTENTIAL HAZARD
Improperly operating over obstacles.
WHAT CAN HAPPEN
Could cause loss of control or a colli-
sion. Could cause the ATV to overturn.
HOW TO AVOID THE HAZARD
Before operating in a new area, check
for obstacles.
Never attempt to ride over large obsta-
cles, such as large rocks or fallen trees.
When you go over obstacles, always fol-
low proper procedures as described in
the Owner’s Manual.
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SLIDING AND SKIDDING
If the rear wheels of your ATV start to slide
sideways, control can usually be regained
(if there is room to do so) by steering in the
direction of the slide. Applying the brakes
or accelerating is not recommended until
you have corrected the slide.
Care should be used when riding on loose
or slippery surfaces since the ATV may
slide. If unexpected and uncorrected, slid-
ing could lead to an accident.
To reduce the tendency for the front
wheels to slide in loose or slippery condi-
tions, positioning your weight over the
front wheels will sometimes help.
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With practice, over a period of time, skill at
controlled sliding can be developed. The
terrain should be chosen carefully before
attempting such maneuvers, since both
stability and control are reduced. Bear in
mind that sliding maneuvers should al-
ways be avoided on extremely slippery
surfaces such as ice, since all control may
be lost.
WARNING
POTENTIAL HAZARD
Skidding or sliding improperly.
WHAT CAN HAPPEN
You may lose control of this ATV. You
may also regain traction unexpectedly,
which may cause the ATV to overturn.
HOW TO AVOID THE HAZARD
Learn to safely control skidding or slid-
ing by practicing at low speeds and on
level, smooth terrain.
On extremely slippery surfaces, such as
ice, go slowly and be very cautious in or-
der to reduce the chance of skidding or
sliding out of control.
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WHAT TO DO IF ...
● If your ATV starts to slide sideways:
Steer in the direction of the slide if you
have the room.
Applying the brakes or accelerating is
not recommended until you have cor-
rected the slide. (See pages 7-37 ~ 7-38.)
● If your ATV can’t make it up a hill you are
trying to climb:
This section is designed to be a reference
guide only. Be sure to read each section on
riding techniques completely.
WHAT TO DO ...
● If your ATV doesn’t turn when you want
it to:
Bring the ATV to a stop and practice the
turning maneuvers again. Be sure you
are putting your weight on the foot-
board to the outside of the turn. Position
your weight over the front wheels for
better control. (See pages 7-23 ~ 7-24.)
● If your ATV begins to tip while turning:
Lean more into the turn to regain bal-
ance. If necessary, gradually let off the
throttle and/or steer to the outside of the
turn. (See pages 7-23 ~ 7-24.)
Turn the ATV around if you still have for-
ward speed. If not, stop, dismount on
the uphill side of the ATV and physically
turn the ATV around. If the ATV starts to
slip backwards DO NOT USE THE REAR
BRAKE - the ATV may tip over on top of
you. Dismount the ATV on the uphill
side. (See pages 7-25 ~ 7-29.)
7-39
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● If your ATV is traversing a sloping sur-
face:
Be sure to ride with your weight posi-
tioned towards the uphill side of the ATV
to maintain proper balance. If the ATV
starts to tip, steer down the hill (if there
are no obstacles in your way) to regain
balance. If you discover that the ATV is
going to tip over, dismount on the uphill
side. (See pages 7-32 ~ 7-33.)
● If your ATV encounters shallow water:
Ride slowly and carefully through slow
moving water, watching for obstacles.
Be sure to let water drain from the ATV
and CHECK YOUR BRAKES FOR PROP-
ER OPERATION when you come out of
the water. Do not continue to ride your
ATV until you have regained adequate
braking ability. (See pages 7-34 ~ 7-35.)
WARNING
Indicates a potential hazard that could
result in serious injury or death.
7-40
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EBU00253
PERIODIC MAINTENANCE AND
ADJUSTMENT
Have a Yamaha dealer perform service if
you are not familiar with machine
service.
Periodic inspection, adjustment, and lubri-
cation will keep your machine in the safest
and most efficient condition possible.
Safety is an obligation of the machine
owner. The most important points of ma-
chine inspection, adjustment, and lubrica-
tion are explained on the following pages.
EBU00259*
Owner’s manual and tool kit
You are recommended to put this owner’s
manual in the vinyl bag and always carry it
under the seat as shown. Put the owner’s
tool kit and low-pressure tire gauge in the
storage box.
WARNING
POTENTIAL HAZARD
Servicing an engine while it is running.
WHAT CAN HAPPEN
Moving parts can catch clothing or parts
of the body, causing injury.
Electrical components can cause shocks
or can start fires.
HOW TO AVOID THE HAZARD
Turn off the engine when performing
maintenance unless otherwise specified.
1. Owner’s manual
8-1
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WARNING
POTENTIAL HAZARD
8
Operating this ATV with improper mod-
ifications.
8
8
WHAT CAN HAPPEN
8
Improper installation of accessories or
modification of this vehicle may cause
changes in handling which in some situ-
ations could lead to an accident.
1. Tool kit
2. Low-pressure tire gauge
8
The service information included in this
manual is intended to provide you, the own-
er, with the necessary information for com-
pleting your own preventive maintenance
and minor repairs. The tools provided in the
Owner’s tool kit are sufficient for this pur-
pose, except that a torque wrench is also
necessary to properly tighten nuts and bolts.
8
8
HOW TO AVOID THE HAZARD
Never modify this ATV through improp-
er installation or use of accessories. All
parts and accessories added to this ve-
hicle should be genuine Yamaha or
equivalent components designed for
use on this ATV and should be installed
and used according to instructions. If
you have questions, consult an autho-
rized Yamaha ATV dealer.
8
9
80
88
88
NOTE:
If you do not have a torque wrench avail-
able during a service operation requiring
one, take your machine to a Yamaha deal-
er to check the torque settings and adjust
them as necessary.
88
88
8-2
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EBU00261
PERIODIC MAINTENANCE/LUBRICATION
INITIAL
3
EVERY
ITEM
ROUTINE
1
6
6
1
month months months months year
• Check valve clearance.
• Adjust if necessary.
Valves*
• Check condition.
• Adjust gap and clean.
• Replace if necessary.
E
Spark plug
• Clean.
• Replace if necessary.
Every 20~40 hours
(more often in wet or dusty areas)
Air filter
• Check idle speed/starter operation.
• Adjust if necessary.
Carburetor*
Cylinder head breather • Check breather hose for cracks or damage.
system*
• Replace if necessary.
• Check for leakage.
• Retighten if necessary.
• Replace gasket if necessary.
Exhaust system*
Spark arrester
Fuel line*
• Clean.
• Check fuel hose for cracks or damage.
• Replace if necessary.
Engine oil
• Replace (Warm engine before draining).
Engine oil filter
Engine oil strainer
• Clean.
• Clean.
• Check oil level/oil leakage.
• Replace.
Final gear oil
Brakes*
• Check operation.
• Adjust if necessary.
8-3
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INITIAL
3
EVERY
ITEM
ROUTINE
1
6
6
1
month months months months year
• Check operation.
• Adjust if necessary.
Clutch*
• Check balance/damage/runout.
• Repair if necessary.
Wheels*
• Check bearing assembly for looseness/damage.
• Replace if damaged.
Wheel bearings*
E
Front and rear
suspension*
• Check operation.
• Correct if necessary.
• Check operation.
• Correct if damaged.
• Check toe-in.
Steering system*
• Adjust if necessary.
Steering shaft*
• Lubricate every 6 months.**
• Check all chassis fittings and fasteners.
• Correct if necessary.
Fittings and Fasteners*
• Check specific gravity.
• Check that the breather hose is working properly.
• Correct if necessary.
Battery*
*
It is recommended that these items be serviced by a Yamaha dealer.
** Lithium soap base grease
WARNING
Indicates a potential hazard that could
result in serious injury or death.
8-4
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EBU00270*
Engine oil
CAUTION:
Engine oil level measurement
1. Place the machine on a level place.
2. Warm up the engine for several min-
utes and stop it. Wait at least ten min-
utes for the oil to drain back into the
crankcase before checking the oil
level.
Be sure no foreign material enters the
crankcase.
NOTE:
Wait at least ten minutes until the oil level
settles before checking.
3. Remove the dipstick and wipe it off
with a clean rag. Insert the dipstick in
the filler hole without screwing it in.
4. Remove the dipstick and inspect the
oil level.
1. Dipstick
3. Minimum level mark
2. Maximum level mark
5. The oil level should be between the
maximum and minimum marks. If the
level is low, add oil to raise it to the
proper level.
8-5
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Engine oil replacement and oil filter
element cleaning
1. Place the machine on a level place.
2. Warm up the engine for several min-
utes and stop it.
3. Place a container under the engine.
4. Remove the dipstick and drain plug to
drain the oil.
CAUTION:
1. Drain plug
2. O-ring
When removing the drain plug, the com-
pression spring, oil strainer and O-ring will
fall out. Take care not to lose these parts.
3. Compression spring
4. Oil strainer
5. Remove the oil filter cover and oil filter.
1. Oil filter cover
2. Oil filter
3. O-ring
8-6
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6. Clean the oil strainer and oil filter with
solvent.
10. Fill the engine with oil and install the
dipstick.
7. Inspect the O-ring and replace if
damaged.
8. Reinstall the oil filter, O-ring, oil filter
cover.
9. Replace the oil strainer, compression
spring, O-ring and drain plug. Then,
tighten the drain plug and oil filter cov-
er bolts to the specified torques.
Recommended oil:
See page 5-7.
Oil quantity:
Periodic oil change:
1.5 L (1.3 Imp qt, 1.6 US qt)
With oil filter replacement:
1.6 L (1.4 Imp qt, 1.7 US qt)
Total amount:
1.8 L (1.6 Imp qt, 1.9 US qt)
CAUTION:
Before reinstalling the drain plug, be sure
to install the O-ring, compression spring
and oil strainer.
CAUTION:
Be sure no foreign material enters the
crankcase.
Tightening torque:
11. Warm up the engine for several min-
utes at idle speed. Check for oil leak-
age while warming up.
Drain plug (engine):
43 Nm (4,3 m·kg, 31 ft·lb)
Filter cover bolt:
10 Nm (1.0 m·kg, 7.2 ft·lb)
8-7
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CAUTION:
If oil leakage is found, stop the engine im-
mediately and check for the cause.
Oil pressure check
1. Put a cloth around the cylinder.
2. Slightly loosen the oil gallery bolt in
the cylinder head.
3. Start the engine and keep it idling until
oil begins to seep from the oil gallery.
If no oil comes out after one minute,
turn the engine off so it will not seize
and find the cause.
1. Oil gallery bolt
2. Cloth
4. Restart the engine and check the oil
pressure.
5. After checking, tighten the oil gallery
bolt to the specified torque.
Tightening torque:
Oil gallery bolt:
7 Nm (0.7 m·kg, 5.1 ft·lb)
CAUTION:
Be sure to inspect the oil pressure after re-
placing the engine oil.
8-8
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EBU00278*
Final gear oil
Final gear oil measurement
1. Place the machine on a level place.
2. Remove the oil filler bolt and check the
oil level. It should be up to the brim of
the hole. If the level is low, add oil to
raise it to the proper level.
CAUTION:
Be sure no foreign material enters the final
gear case.
1. Final gear oil
2. Correct oil level
3. Oil filler bolt
Final gear oil replacement
1. Remove the final gear case cover.
3. Install the oil filler bolt and tighten to
the specified torque.
Tightening torque:
Oil filler bolt:
23 Nm (2.3 m·kg, 17 ft·lb)
8-9
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2. Place the machine on a level place.
3. Place a container under the final gear
case.
4. Remove the oil filler bolt and the drain
plug to drain the oil.
6. Fill the final gear case with oil.
Recommended oil:
SAE 80 API “GL-4” Hypoid gear oil
Oil quantity:
Periodic oil change:
0.25 L (0.21 Imp qt, 0.27 US qt)
Total amount:
0.27 L (0.23 Imp qt, 0.29 US qt)
CAUTION:
Be sure no foreign material enters the final
gear case.
7. Install the filler bolt and tighten to the
specified torque.
1. Drain plug
5. Install the drain plug and tighten to the
specified torque.
Tightening torque:
Filler bolt (final gear case):
23 Nm (2.3 m·kg, 17 ft·lb)
Tightening torque:
Drain plug (final gear case):
23 Nm (2.3 m·kg, 17 ft·lb)
8. Check for oil leakage. If oil leakage is
found, check for the cause.
9. Reinstall the final gear case cover.
8-10
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EBU00286
Spark plug inspection
Before installing the spark plug, measure
the electrode gap with a feeler gauge and
adjust to specification.
The spark plug is an important engine
component and is easy to inspect. The
condition of the spark plug can indicate the
condition of the engine.
For example, a very white center electrode
porcelain color could indicate an intake air
leak or carburetion problem for that cylin-
der. Do not attempt to diagnose such prob-
lems yourself.
Spark plug gap:
0.6 ~ 0.7 mm (0.024 ~ 0.028 in)
Instead, take the machine 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, you should re-
place the spark plug with one of the proper
type.
a. Spark plug gap
Standard spark plug:
DR7EA (NGK)
8-11
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When installing the spark plug, always
clean the gasket surface and use a new
gasket. Wipe off any grime from the
threads and tighten to the specified torque.
Tightening torque:
Spark plug:
17.5 Nm (1.75 m·kg, 12.5 ft·lb)
EBU00294*
1. Check hose
Air filter cleaning
1. Remove the seat.
2. Remove the air filter case cover.
NOTE:
There is a check hose at the bottom of the
air filter case. If dust or water collects in
this hose, empty the hose and clean the air
filter element and air filter case.
1. Air cleaner case cover
8-12
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3. Pull out the air filter element.
4. Separate the foam cover from the air
filter element.
5. Tap the element lightly to remove
most of the dust and dirt. Blow out the
remaining dirt with compressed air. If
the element is damaged, replace it.
6. Wash the foam cover gently but thor-
oughly in water or solvent.
1. Air filter element
2. Foam cover
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8-13
WARNING
NOTE:
The air filter element should be cleaned ev-
ery 20 ~ 40 hours. It should be cleaned
more often if the machine is operated in
extremely dusty areas. Each time filter ele-
ment maintenance is performed, check the
air inlet to the filter case for obstructions.
Check the air cleaner rubber joint to the
carburetor and manifold fittings for an air-
tight seal. Tighten all fittings securely to
avoid the possibility of unfiltered air enter-
ing the engine.
POTENTIAL HAZARD
Using low flash point solvents or gaso-
line to clean the foam cover.
WHAT CAN HAPPEN
Low flash point solvents or gasoline can
catch fire or explode.
HOW TO AVOID THE HAZARD
Use parts cleaning solvent to clean the
foam cover.
7. Squeeze the excess water or solvent
out of the foam cover and let it dry.
CAUTION:
CAUTION:
● Do not twist the foam cover when
squeezing it.
Never operate the engine with the air filter
element removed. This will allow unfil-
tered air to enter, causing rapid engine
wear and possible engine damage. Addi-
tionally, operation without the filter ele-
ment will affect carburetor jetting with
subsequent poor performance and possi-
ble engine overheating.
● Do not add oil to the foam cover.
8. Inspect the foam cover. If damaged,
replace it.
9. Reinstall the foam cover to the air filter
element.
10. Reinstall the air filter assembly and
parts removed fDoorwanlcoacdefsrosm. Www.Somanuals.com. All Manuals Search And Download.
8-14
EBU00296
EBU00301
Carburetor adjustment
Idle speed adjustment
The carburetor is a vital part of the engine
and requires very sophisticated adjust-
ment. Most adjusting should be left to a
Yamaha dealer who has the professional
knowledge and experience to do so. How-
ever, the idling speed may be performed
by the owner as a part of the usual mainte-
nance routine.
NOTE:
A diagnostic tachometer must be used for
this procedure.
1. Start the engine and warm it up for a
few minutes at approximately 1,000 to
2,000 r/min. Occasionally rev the en-
gine to 4,000 to 5,000 r/min. The en-
gine is warm when it quickly responds
to the throttle.
CAUTION:
The carburetor was set at the Yamaha fac-
tory after many tests. If the settings are
disturbed by someone without sufficient
technical knowledge, poor engine perfor-
mance and damage may result.
2. Connect the tachometer and set the
idle to the specified idling speed by
adjusting the throttle stop screw. Turn
the screw in to increase engine speed,
and out to decrease engine speed.
Specified idle speed:
1,400 ~ 1,500 r/min
8-15
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EBU00307
Throttle lever adjustment
NOTE:
Adjust the engine idling speed before ad-
justing the throttle lever free play.
1. Loosen the locknut.
2. Turn the adjusting bolt until the throt-
tle lever free play is 3 ~ 5 mm (0.12 ~
0.20 in).
3. Tighten the locknut.
1. Throttle stop screw
EBU00303
Valve clearance adjustment
The correct valve clearance changes with
use, resulting in improper fuel/air supply
or engine noise. To prevent this, the valve
clearance must be adjusted regularly. This
adjustment however, should be left to a
professional Yamaha service technician.
1. Adjusting bolt
2. Locknut
a. 3 ~ 5 mm (0.12 in ~ 0.20 in)
8-16
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EBU00312
EBU00313
Front brake pad inspection
Inspect the brake pads for damage and
wear. If the thickness is less than the spec-
ified value, have a Yamaha dealer replace
the pads.
Rear brake shoe inspection
A wear indicator is provided on the rear
brake. This indicator allows checking of
brake shoe wear without disassembling
the brake. Apply the rear brake and check
the position of the indicator. If the indicator
reaches the wear limit line, ask a Yamaha
dealer to replace shoes as a set.
1. Brake pad
a. Wear limit: 1 mm (0.04 in)
NOTE:
The wheels need to be removed to inspect
the brake pads. See page 8-26 for removal
procedures.
1. Wear indicator
2. Wear limit
8-17
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EBU00755
Brake fluid level inspection
Insufficient brake fluid may let air enter the
brake system, possibly causing the brakes
to become ineffective.
2. Use only the designated quality brake
fluid. Otherwise, the rubber seals may
deteriorate, causing leakage and poor
brake performance.
Before riding, check that the brake fluid is
above the lower level and replenish when
necessary.
Recommended brake fluid: DOT 4
3. Refill with the same type of brake fluid.
Mixing fluids may result in a harmful
chemical reaction and lead to poor
brake performance.
4. Be careful that water does not enter
the master cylinder when refilling. Wa-
ter will significantly lower the boiling
point of the fluid and may result in va-
por lock.
5. Brake fluid may deteriorate painted
surfaces or plastic parts. Always clean
up spilled fluid immediately.
6. Have a Yamaha dealer check the cause
if the brake fluid level goes down.
1. Minimum level mark
Observe these precautions:
1. When checking the fluid level, make
sure the top of the master cylinder is
level by turning the handlebars.
8-18
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EBU00752*
EBU00623
Brake fluid replacement
Front brake adjustment
1. Complete fluid replacement should be
done only by trained Yamaha service
personnel.
The front brake lever should have a free
play of zero mm (zero in) at the lever end. If
not, ask a Yamaha dealer to adjust it.
2. Have a Yamaha dealer replace the fol-
lowing components during periodic
maintenance or when they are dam-
aged or leaking.
● Replace all rubber seals every two
years.
● Replace all hoses every four years.
a. Free play
8-19
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WARNING
POTENTIAL HAZARD
Operating with improperly serviced or
adjusted brakes.
WHAT CAN HAPPEN
You could lose braking ability, which
could lead to an accident.
HOW TO AVOID THE HAZARD
After servicing:
● Make sure the brakes operate
smoothly and that the free play is cor-
rect.
● Make sure the brakes do not drag.
● Make sure the brakes are not spongy.
All air must be bled from the brake
system.
Replacement of brake components re-
quires professional knowledge. These
procedures should be performed by a
Yamaha dealer.
8-20
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EBU00327*
Rear brake adjustment
Brake pedal
1. Fully loosen the adjusting nut on the
brake cable.
a. 20 ~ 30 mm (0.8 ~ 1.2 in)
Brake lever
1. Loosen the locknut and fully turn in
the adjusting bolt on the handlebar.
1. Brake cable adjusting nut 2. Brake rod adjusting nut
2. Turn the adjusting nut on the brake
rod until free play at the pedal is 20 ~
30 mm (0.8 ~ 1.2 in).
1. Locknut
2. Adjusting bolt
8-21
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2. Turn the adjusting nut on brake cable
to provide a gap of 0 ~ 1 mm (0 ~
0.04 in) between the cam shaft lever
and pin.
3. Turn the adjusting bolt until free play
reaches 5 ~ 7 mm (0.2 ~ 0.3 in) at the
lever pivot.
1. Locknut
2. Adjusting bolt
a. 5 ~ 7 mm (0.2 ~ 0.3 in)
1. Brake cable adjusting nut
a. 0 ~ 1 mm (0 ~ 0.04 in)
4. Tighten the locknut.
8-22
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EBU00346
Clutch adjustment
1. Loosen the locknut.
WARNING
POTENTIAL HAZARD
Operating with improperly serviced or
adjusted brakes.
2. Slowly turn the adjusting bolt counter-
clockwise until resistance is felt. Then,
turn it 1/8 turn clockwise.
WHAT CAN HAPPEN
You could lose braking ability, which
could lead to an accident.
HOW TO AVOID THE HAZARD
After servicing:
● Make sure the brakes operate
smoothly and that the free play is cor-
rect.
● Make sure the brakes do not drag.
Replacement of brake components re-
quires professional knowledge. These
procedures should be performed by a
Yamaha dealer.
1. Locknut
2. Adjusting bolt
3. Tighten the locknut to specification.
Tightening torque:
15 Nm (1.5 m·kg, 11 ft·lb)
8-23
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Lubricate the inner cables and the cable
ends. If the cables do not operate smooth-
ly, ask a Yamaha dealer to replace them.
NOTE:
Turn the adjusting bolt counterclockwise
to decrease the clutch free play and turn it
clockwise to increase the free play.
Recommended lubricant:
Yamaha chain and cable lube or
SAE 10W30 motor oil
EBU00356
Cable inspection and lubrication
WARNING
POTENTIAL HAZARD
Damaged control cables.
WHAT CAN HAPPEN
Corrosion can result when the outer
covering of control cables becomes
damaged. Cables can also become
frayed or kinked. Operation of controls
could be restricted, which could cause
an accident or injury.
HOW TO AVOID THE HAZARD
Inspect cables frequently. Replace dam-
aged cables.
8-24
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EBU00717
Brake lever and brake pedal lubrication
Lubricate the pivoting parts.
Recommended lubricant:
Lithium-soap-based grease
(all-purpose grease)
8-25
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EBU00370
EBU00373
Steering shaft lubrication
Lubricate the pivot points. Use a grease
gun.
Wheel removal
1. Elevate the wheel by placing a suitable
stand under the frame.
2. Remove the nuts from the wheel.
3. Remove the wheel assembly.
Recommended lubricant:
Lithium soap base grease
8-26
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EBU00376
Wheel installation
1. Tapered wheel nuts are used for both
front and rear wheels. Install the nut
with its tapered side towards the
wheel.
When installing the wheel, reverse the re-
moval procedure. Pay attention to the fol-
lowing.
2. Tighten the wheel nuts.
NOTE:
The arrow mark
on the tire must point
toward the rotating direction of the wheel.
1. Tapered nut
Wheel nut torque:
Front: 55 Nm (5.5 m·kg, 40 ft·lb)
Rear: 55 Nm (5.5 m·kg, 40 ft·lb)
1. Arrow mark
8-27
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EBU00378
Battery
Check the level of the battery fluid and see
if the terminals are tight. Add distilled wa-
ter if the fluid level is low.
CAUTION:
Do not leave or store the battery on its
side. When inspecting the battery, be sure
the breather hose is routed correctly. If it
touches the frame or exists in such a way
as to cause battery electrolyte or gas to
exit onto the frame, structural and cos-
metic damage to the machine can occur.
1. Battery
2. Battery breather hose
3. Clamp (× 3)
8-28
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WARNING
EYES: Flush with water for 15 minutes
and get prompt medical attention. Keep
batteries away from sparks, flames, cig-
arettes or other sources of ignition. Ven-
tilate when charging or using in a closed
space.
POTENTIAL HAZARD
Failure to handle batteries or battery
electrolyte carefully.
WHAT CAN HAPPEN
You could be poisoned. You could be se-
verely burned by the sulfuric acid in bat-
tery electrolyte.
Batteries produce explosive gases.
HOW TO AVOID THE HAZARD
Avoid contact with skin, eyes or cloth-
ing. Always shield eyes when working
near batteries. Keep out of reach of chil-
dren.
Antidote:
EXTERNAL: Flush with water.
INTERNAL: Drink large quantities of wa-
ter or milk. Follow with milk of magne-
sia, beaten egg or vegetable oil. Get
prompt medical attention.
8-29
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EBU00382*
Replenishing the battery fluid
CAUTION:
A poorly maintained battery will corrode
and discharge quickly. The battery fluid
should be checked at least once a month.
1. The level should be between the up-
per and lower level marks. Use only
distilled water if refilling is necessary.
Normal tap water contains minerals which
are harmful to a battery. Therefore, refill
only with distilled water.
5. When the machine is not to be used
for a month or longer, remove the bat-
tery and store it in a cool, dark place.
Completely recharge the battery be-
fore reusing.
6. If the battery is to be stored for a long-
er period than the above, check the
specific gravity at least once a month
and recharge the battery when it is too
low.
7. Always make sure the connections are
correct when putting the battery back
in the machine. Make sure the breath-
er hose is properly connected and is
not damaged or obstructed.
1. Maximum level mark “UPPER LEVEL”
2. Minimum level mark “LOWER LEVEL”
2. Disconnect the negative (−) lead.
3. Disconnect the positive (+) lead.
4. Remove the bolts for battery bracket
and remove the battery.
8-30
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EBU00390
Fuse replacement
1. The fuse case is located under the
seat.
2. If the fuse is blown, turn off the main
switch and install a new fuse of the
specified amperage. Then turn on the
switches. If the fuse immediately
blows again, consult a Yamaha dealer.
WARNING
POTENTIAL HAZARD
Using an improper fuse.
WHAT CAN HAPPEN
An improper fuse can cause damage to
the electrical system which could lead
to a fire.
HOW TO AVOID THE HAZARD
Always use a fuse of the specified rat-
ing. Never use a material in place of the
proper fuse.
Specified fuse: 20 A
CAUTION:
To prevent accidental short-circuiting,
turn off the main switch when checking or
replacing a fuse.
1. Main fuse
2. Spare fuse
8-31
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EBU00399
Replacing the headlight bulb
If the headlight bulb burns out, replace the
bulb as follows:
1. Remove the headlight cover.
1. Cover (× 2)
1. Headlight cover
2. Remove the cover, and turn the bulb
holder counterclockwise and remove
the defective bulb.
1. Bulb holder
8-32
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EBU00409
Headlight beam adjustment
WARNING
POTENTIAL HAZARD
The headlight bulb is hot when it is on
and immediately after it is turned off.
CAUTION:
It is advisable to have a Yamaha dealer
make this adjustment.
WHAT CAN HAPPEN
You can be burned, or a fire could start if
the bulb touches something flammable.
1. Vertical adjustment:
To raise the beam, turn the adjusting
screw clockwise.
To lower the beam, turn the screw
counterclockwise.
HOW TO AVOID THE HAZARD
Wait for the bulb to cool before touch-
ing or removing it.
3. Put a new bulb into position and se-
cure it in place with the bulb holder.
4. Reinstall the cover and headlight cov-
er. Adjust the headlight beam if neces-
sary.
1. Adjusting screw (× 2)
8-33
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EBU00754
Spark arrester cleaning
4. Install the purging bolt and tighten it.
Select a well-ventilated area free of com-
bustible materials and make sure the ex-
haust pipe and muffler are cool.
1. Remove the purging bolt.
WARNING
POTENTIAL HAZARD
Improperly purging the exhaust system.
Hot exhaust system.
WHAT CAN HAPPEN
Could injure the eyes.
Could cause burns.
Could cause carbon monoxide poison-
ing, possibly leading to death.
Could start a fire.
HOW TO AVOID THE HAZARD
When cleaning the spark arrester:
Always let the exhaust system cool pri-
or to touching exhaust components. Al-
ways wear eye protection, and make
sure no one is behind the vehicle. Never
run the engine in an enclosed area.
Make sure there are no combustible ma-
terials in the area.
1. Purging bolt
2. Start the engine and rev it up approxi-
mately twenty times while momen-
tarily creating exhaust system back
pressure by blocking the end of the
muffler with a shop towel.
3. Stop the engine and allow the exhaust
pipe to cool.
8-34
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EBU00412
Troubleshooting
WARNING
Although Yamaha machines receive a rigid
inspection before shipment from the facto-
ry, trouble may occur during operation.
Any problem in the fuel, compression, or
ignition systems can cause poor starting
and loss of power. The troubleshooting
chart describes a quick, easy procedure for
making checks. If your machine requires
any repair, take it to a Yamaha dealer.
The skilled technicians at a Yamaha dealer-
ship have the tools, experience, and know-
how to properly service your machine. Use
only genuine Yamaha parts on your ma-
chine. Imitation parts may look like
Yamaha parts, but they are often inferior.
Consequently, they have a shorter service
life and can lead to expensive repair bills.
POTENTIAL HAZARD
Checking the fuel system while smok-
ing or near an open flame.
WHAT CAN HAPPEN
Fuel can ignite or explode, causing se-
vere injury or property damage.
HOW TO AVOID THE HAZARD
Do not smoke when checking the fuel
system. Make sure there are no open
flames or sparks in the area, including
pilot lights from water heaters or
furnaces.
8-35
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EBU00440
Troubleshooting chart
Turn the fuel
cock to “OFF”.
Remove the
fuel pipe.
Check fuel
flow.
Fuel cock
clogged.
There is fuel.
No fuel.
1. Fuel
Check if there is fuel
in the fuel tank.
Turn the fuel
cock to “RES”.
Some fuel.
No fuel.
Restart engine.
Clean fuel
cock.
E
Supply fuel.
2. Compression
There is compression.
No compression.
Compression normal.
Use electric starter to
see if there is
compression.
Ask a Yamaha dealer to
inspect.
3. Ignition
Wipe clean with dry cloth.
Wet
Dry
Ignition system
normal.
Spark good.
Remove plug and
check electrode.
Use the
electric starter.
Attach plug cap and
ground to chassis.
Spark weak.
No spark.
Adjust plug gap
or replace plug.
4. Battery
Engine turns over
quickly.
Battery good.
Use electric starter.
Engine turns over
slowly.
Check fluid, recharge,
check connections.
Ask a Yamaha dealer to
inspect.
8-36
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EBU00419*
CLEANING AND STORAGE
CAUTION:
Excessive water pressure may cause wa-
ter seepage and deterioration of wheel
bearings, brakes, transmission seals and
electrical devices. Many expensive repair
bills have resulted from improper high
pressure detergent applications such as
those available in coin-operated car
washers.
CLEANING
Frequent, thorough cleaning of your ma-
chine will not only enhance its appearance
but will improve its general performance
and extend the useful life of many
components.
1. Before cleaning the machine:
a. Block off the end of the exhaust pipe to
prevent water entry. A plastic bag and
strong rubber band may be used.
b. Make sure the spark plug and all filler
caps are properly installed.
2. If the engine case is excessively
greasy, apply degreaser with a paint
brush. Do not apply degreaser to the
wheel axles.
3. Rinse the dirt and degreaser off with a
garden hose. Use only enough pres-
sure to do the job.
4. Once the majority of the dirt has been
hosed off, wash all surfaces with
warm water and mild, detergent-type
soap. An old toothbrush or bottle
brush is handy for hard-to-get-at
places.
5. Rinse the machine off immediately
with clean water and dry all surfaces
with a chamois, clean towel or soft ab-
sorbent cloth.
9-1
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6. Clean the seat with a vinyl upholstery
cleaner to keep the cover pliable and
glossy.
7. Automotive type wax may be applied
to all painted and chrome plated sur-
faces. Avoid combination cleaner-
waxes. Many contain abrasives which
may mar the paint or protective finish.
When finished, start the engine and let
it idle for several minutes.
WARNING
POTENTIAL HAZARD
Operation with wet brakes after wash-
ing.
8
8
8
WHAT CAN HAPPEN
8
Wet brakes may have reduced stopping
ability, increasing the chance of an acci-
dent.
8
8
HOW TO AVOID THE HAZARD
8
Test the brakes after washing. Apply
the brakes several times at slow speeds
to let friction dry out the linings.
8
9
80
88
88
88
88
9-2
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EBU00426*
STORAGE
2. Remove the spark plug, pour about
one tablespoon of SAE 10W30 or
20W40 motor oil in the spark plug hole
and reinstall the spark plug. Ground
the spark plug wire and turn the en-
gine over several times to coat the cyl-
inder wall with oil.
3. Lubricate all control cables.
4. Block up the frame to raise all wheels
off the ground.
5. Tie a plastic bag over the exhaust pipe
outlet to prevent moisture from
entering.
6. If storing in a humid or salt-air atmo-
sphere, coat all exposed metal surfac-
es with a light film of oil. Do not apply
oil to any rubber parts or the seat
cover.
Long term storage (60 days or more) of
your machine will require some preventive
procedures to guard against deterioration.
After thoroughly cleaning the machine,
prepare for storage as follows:
1. Fill the fuel tank with fresh fuel and
add the specified amount of fuel stabi-
lizer and conditioner.
Specified amount:
1 oz of stabilizer to each gallon of fuel
(or 7.5 cc of stabilizer to each liter of
fuel)
NOTE:
Use of Yamaha fuel stabilizer and Condi-
tioner eliminates the need to drain the fuel
system. Consult a Yamaha dealer if the
fuel system needs to be drained instead.
9-3
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7. Remove the battery and charge it.
Store it in a dry place and recharge it
once a month. Do not store the battery
in an excessively warm or cold place
(less than 0 ˚C [30 ˚F] or more than
30 ˚C [90 ˚F]).
NOTE:
Make any necessary repairs before storing
the machine.
9-4
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EBU00428
SPECIFICATIONS
MODEL
YFM250X
Dimension:
Overall length
Overall width
Overall height
Seat height
1,940 mm (76.3 in)
1,005 mm (39.5 in)
1,118 mm (44.0 in)
780 mm (30.7 in)
1,170 mm (46.0 in)
150 mm ( 5.9 in)
2,900 mm ( 114 in)
E
Wheel base
Minimum ground clearance
Minimum turning radius
Basic weight:
With oil and full fuel tank
212 kg (467 lb)
Engine:
Type
Air cooled, 4-stroke, SOHC
Cylinder arrangement:
Displacement
Bore × Stroke
Compression ration
Starting system
Lubrication system
Single cylinder, forward inclined
3
229.6 cm
71 × 58 mm (2.79 × 2.28 in)
8.7 : 1
Electric starter and recoil starter
Wet sump
10-1
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MODEL
YFM250X
Engine oil:
Type
10
10
10
See page 5-7
Quantity:
Periodic oil change
With oil filter replacement
Total amount
1.5 L (1.3 Imp qt, 1.6 US qt)
1.6 L (1.4 Imp qt, 1.7 US qt)
1.8 L (1.6 Imp qt, 1.9 US qt)
10
Final gear case oil:
Type
SAE80 API “GL-4” Hypoid gear oil
10
10
10
10
10
10
Quantity
Total amount
0.27 L (0.23 Imp qt, 0.29 US qt)
Dry type element
Air filter
Fuel:
Type
UNLEADED FUEL
12 L (2.64 Imp gal, 3.17 US gal)
1.6 L (0.35 Imp gal, 0.42 US gal)
Tank capacity
Reserve amount
Carburetor:
Type/quantity
Manufacturer
BST34/1
MIKUNI
1010
Spark plug:
Type
1010
1010
1010
DR7EA
Manufacturer
Gap
NGK
0.6 ~ 0.7 mm (0.024 ~ 0.028 in)
10-2
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MODEL
YFM250X
Clutch type
Wet, centrifugal automatic
Transmission:
Primary reduction system
Primary reduction ratio
Secondary reduction system
Secondary reduction ratio
Transmission type
Spur gear
73/22 (3.318)
Shaft drive
19/18 × 46/11 (4.414)
Constant mesh 5-speed forward, 1-speed reverse
Left foot operation
E
Operation
Gear ratio:
1st
34/12 (2.833)
2nd
3rd
4th
5th
34/19 (1.789)
29/22 (1.318)
26/25 (1.040)
23/28 (0.821)
Reverse
73/22 × 34/12 × 19/18 (9.924)
Chassis:
Frame type
Caster angle
Trail
Steel tube
4°
20 mm (0.78 in)
Tire:
Type
Tubeless
Size: Front
Size: Rear
AT22 × 7-10
AT22 × 10-10
10-3
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MODEL
YFM250X
Brake:
Front brake type
Dual disc brake
Right hand operation
Drum brake
Operation
Rear brake type
Operation
Left hand and right foot operation
Suspension:
Front
E
Strut
Rear
Swingarm (monocross)
Shock absorber:
Front
Coil spring, Oil damper
Coil spring, Oil damper
Rear
Wheel travel:
Front
125 mm (4.9 in)
135 mm (5.3 in)
Rear
Electrical:
Ignition system
DC C.D.I.
Generator system
Battery type/voltage, capacity
AC magneto
YB14A-A2/12V, 14AH
Headlight type
Bulb
Bulb voltage, wattage × quantity:
Headlight
Taillight
12V, 25W/25W × 2
12V, 7.5W × 1
Indicator light:
Neutral
12V, 1.7W × 1
12V, 1.7W × 1
Reverse
10-4
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EBU00430
NOISE REGULATION
TAMPERING WITH NOISE CONTROL SYSTEM PROHIBITED:
Federal law prohibits the following acts or the causing thereof: (1) The removal or render-
ing inoperative by any person other than for purposes of maintenance, repair, or replace-
ment of any device or element of design incorporated into any new vehicle for the purpose
of noise control prior to its sale or delivery to the ultimate purchaser or while it is in use or
(2) the use of the vehicle after such device or element of design has been removed or ren-
dered inoperative by any person.
“AMONG THOSE ACTS PRESUMED TO CONSTITUTE TAMPERING ARE THE ACTS LIST-
ED BELOW.”
These acts include tampering with the following systems; i.e., modification, removal, etc.
Muffler
Exhaust system
Intake system
Exhaust pipe
Silencer
Air cleaner case
Air cleaner element
Intake duct
11-1
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EBU00431
MAINTENANCE RECORD
Copies of work orders and/or receipts for parts you purchase and install will be required to
document maintenance done in accordance with the warranty. The chart below is printed
only as a reminder to you that the maintenance work is required. It is not acceptable proof
12
12
12
12
12
12
12
12
9
of maintenance work.
ACL-02E
MAINTENANCE
INTERVAL
DATE OF
SERVICE
SERVICING DEALER
NAME AND ADDRESS
MILEAGE
REMARKS
1 Month
3 Months
6 Months
12 Months
18 Months
24 Months
30 Months
36 Months
42 Months
48 Months
54 Months
60 Months
120
11
12
1212
1212
12-1
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EBU00432
YAMAHA MOTOR CORPORATION, U.S.A.
ATV LIMITED WARRANTY
13-1
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13
13
13
13
13
13
13
13
13
130
1313
1313
13
1313
13-2
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EBU00435
YAMAHA EXTENDED SERVICE (Y.E.S.)
E
14-1
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14
14
14
14
14
14
14
14
14
140
1414
1414
1414
14
14-2
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E
EBU00436
WARNING
Indicates a potential hazard that could
result in serious injury or death.
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EBU00438
E
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EBU00438
WARNING
Improper ATV use can result in SEVERE INJURY or DEATH.
ALWAYS USE
NEVER USE
ON PUBLIC
ROADS
NEVER CARRY
PASSENGERS
NEVER USE
WITH DRUGS
OR ALCOHOL
AN APPROVED
HELMET AND
PROTECTIVE GEAR
NEVER operate:
ALWAYS:
• without proper training or instruction.
• at speeds too fast for your skills or
the conditions.
• use proper riding techniques to avoid
vehicle overturns on hills and rough terrain
and in turns.
• on public roads-a collision can occur with
another vehicle.
• with a passenger-passengers affect balance
and steering and increase risk
of losing control.
• avoid paved surfaces-pavement may
seriously affect handling and control.
LOCATE AND READ OWNER'S MANUAL. FOLLOW ALL INSTRUCTIONS AND WARNINGS.
(For replacement manual, call 1-800-532-1558)
YAMAHA MOTOR CO., LTD.
PRINTED ON RECYCLED PAPER
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PRINTED IN USA
2000 · 5 - 4.0 × 1 CR
(E)
|