Yamaha YFM25BV User Manual
READ THIS MANUAL CAREFULLY!
It contains important safety information.
OWNER’S MANUAL
YFM25BV
WARNING
This ATV should not be ridden by anyone under 16 years of age.
1P0-F8199-11LIT-11626-19-40
EBU00776
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1-
INTRODUCTION
Congratulations on your purchase of the Yamaha YFM25BV. It represents the result of many
years of Yamaha experience in the production of fine sporting, touring, and pace-setting racing
machines. With the purchase of this Yamaha, you can now appreciate the high degree of craftsmanship and reliability that have made Yamaha a leader in these fields.
This manual will provide you with a good basic understanding of the features and operation of this
ATV.
This manual includes important safety information. It provides information about
special techniques and skills necessary to ride your ATV.
It also includes basic maintenance
and inspection procedures. If you have any questions regarding the operation or maintenance of
your ATV, please consult a Yamaha dealer.
AN IMPORTANT SAFETY MESSAGE:
●
READ THIS MANUAL TOGETHER WITH TIPS FOR THE ATV RIDER CAREFULLY AND
COMPLETELY BEFORE OPERATING YOUR ATV. MAKE SURE YOU UNDERSTAND ALL
INSTRUCTIONS.
●
PAY CLOSE ATTENTION TO THE WARNING AND CAUTION LABELS ON THE ATV.
●
NEVER OPERATE AN ATV WITHOUT PROPER TRAINING OR INSTRUCTION. FREE
TRAINING IS AVAILABLE TO ANYONE WHO BUYS A NEW ATV. CALL 1-800-887-2887
FOR MORE INFORMATION.
●
THIS ATV, AND ANY OTHER ATV OVER 90cc, SHOULD NOT BE RIDDEN BY ANYONE
UNDER 16 YEARS OF AGE.
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WARNING
CAUTION:
NOTE:
1-
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:
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.
A CAUTION indicates special precautions that must be taken to
avoid damage to the machine.
A NOTE provides key information to make procedures easier or
clearer.
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*Product and specifications are subject to change without notice.
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2-
IMPORTANT NOTICE
This ATV is designed and manufactured for OFF-ROAD use only. It is illegal and unsafe to operate this ATV on any public street, road or highway.
This ATV complies with all applicable OFF-ROAD noise level and spark arrester laws and regulations in effect at the time of manufacture.
Please check your local riding laws and regulations before operating this ATV.
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YFM25BV
OWNER’S MANUAL
AFFIX DEALER
LABEL HERE
©2005 by Yamaha Motor Corporation,
U.S.A.
1st edition, May 2005
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-11626-19-40
EBU00014
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 number records.......... 3-2
Key identification number................ 3-2
Vehicle identification number .......... 3-3
Model label ...................................... 3-3
CONTROL FUNCTIONS...................4-1
4
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
Brake pedal and rear brake
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 compartment ....................4-15
Front carrier ...................................4-16
Rear carrier ....................................4-16
Rear shock absorber
adjustment ...................................4-16
PRE-OPERATION CHECKS ........... 5-1
5
Front and rear brakes ..................... 5-3
Fuel ................................................. 5-5
Engine oil ........................................ 5-7
Final gear oil.................................... 5-7
Throttle lever ................................... 5-7
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
OPERATION..................................... 6-1
6
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
Engine break-in ...............................6-7
Parking............................................. 6-8
Parking on a slope........................... 6-9
Accessories and loading ...............6-10
RIDING YOUR ATV ..........................7-1
7
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
PERIODIC MAINTENANCE AND
8
ADJUSTMENT.................................. 8-1
Owner’s manual and tool kit............ 8-1
Periodic maintenance chart for
the emission control system.......... 8-3
General maintenance and
lubrication chart ............................. 8-4
Engine oil and oil filter element ....... 8-6
Final gear oil .................................. 8-12
Spark plug inspection.................... 8-15
Air filter element cleaning.............. 8-18
Spark arrester cleaning ................. 8-22
Carburetor adjustment................... 8-23
Idle speed adjustment ................... 8-24
Valve clearance adjustment.......... 8-24
Throttle lever adjustment............... 8-25
Select lever safety system cable
adjustment................................... 8-25
Front brake pad check .................. 8-26
Rear brake shoe inspection ..........8-26
Brake fluid level check................... 8-27
Brake fluid replacement................. 8-28
Front brake lever free play ............8-28
Adjusting the brake pedal and
rear brake lever............................8-30
Adjusting the rear brake light
switch ...........................................8-34
Clutch adjustment ..........................8-35
Cable inspection and
lubrication.....................................8-35
Brake lever and brake pedal
lubrication.....................................8-36
Steering shaft lubrication ...............8-37
Wheel removal...............................8-38
Wheel installation...........................8-38
Battery............................................8-40
Replenishing the battery fluid ........8-42
Fuse replacement ..........................8-44
Replacing a headlight bulb ............8-45
Headlight beam adjustment...........8-48
Tail/brake light bulb
replacement .................................8-48
Troubleshooting .............................8-50
Troubleshooting chart ....................8-51
CLEANING AND STORAGE............ 9-1
9
A. Cleaning...................................... 9-1
B. Storage ....................................... 9-3
SPECIFICATIONS.......................... 10-1
10
NOISE REGULATION.................... 11-1
11
MAINTENANCE RECORD ............ 12-1
12
ATV LIMITED WARRANTY............ 13-1
13
YAMAHA EXTENDED SERVICE
14
(Y.E.S.) ........................................... 14-1
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1-
LOCATION OF THE WARNING AND
SPECIFICATION LABELS
1-1
Read and understand all of the labels on your
machine. They contain important information
for safe and proper operation of your ATV.
2
1
2
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.
1
Overloading this ATV or carrying cargo improperly can change
handling, stability and braking performance and can lead to an
accident. Never exceed the maximum front cargo limit of
: 30kg (66 lbs)
NEVER sit on the carrier. Refer to instructions in the Owner’s
Manual.
WARNING
4XE-F4877-30
3
4
5
6
7
8
9
10
11
12
13
14
1-2
3
5
6
4
Overloading this ATV or carrying cargo improperly can change
handling, stability and braking performance and can lead to an
accident. Never exceed the maximum rear cargo limit of
: 45kg (99 lbs)
NEVER sit on the carrier. Refer to instructions in the Owner’s
Manual.
WARNING
4XE-F4897-30
1-3
7
9
8
1-4
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SAFETY INFORMATION
AN ATV IS NOT A TOY AND CAN BE HAZARDOUS TO OPERATE.
An ATV handles differently
from other vehicles including motorcycles and cars. A collision or rollover can occur quickly, even
during routine maneuvers such as turning and riding on hills or over obstacles, if you fail to take
proper precautions.
SEVERE INJURY OR DEATH can result if you do not follow these instructions:
●
Read this manual and all labels carefully and follow the operating procedures described.
●
Never operate an ATV without proper training or instruction.
Take a Training Course.
Beginners should receive training from a certified instructor. Contact an authorized ATV dealer or call
1-800-887-2887 to find out about the training courses nearest you.
●
Always follow the age recommendation:
– A child under 16 years old should never operate an ATV with engine size greater than 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 operate it safely.
●
Never carry a passenger on an ATV.
●
Always avoid operating an ATV on any paved surfaces, including sidewalks, driveways, parking lots and streets.
●
Never operate an ATV on any public street, road or highway, even a dirt or gravel one.
2-1
●
Never operate an ATV without wearing an approved motorcycle helmet that fits properly. You
should also wear eye protection (goggles or face shield), gloves, boots, a 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, 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 condition. Always follow the inspection and maintenance procedures and schedules described in this manual.
●
Always keep both hands on the handlebars and both feet on the footboards of the ATV during
operation.
●
Always go slowly and be extra careful when 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 turning 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.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
2-2
●
Always follow proper procedures for climbing hills as described in this manual. Check the terrain carefully before you start up any hill. Never climb hills with excessively slippery or loose
surfaces. Shift your weight forward. Never open the throttle suddenly 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 described in
this manual. Check the terrain carefully before you start down any hill. Shift your weight backward. Never go down a hill at high speed. Avoid going down a hill at an angle that would cause
the vehicle to lean sharply to one side. Go straight down the hill where possible.
●
Always follow proper procedures for crossing the side of a hill as described in this manual.
Avoid hills with excessively slippery or loose surfaces. Shift your weight to the uphill side of the
ATV. Never attempt to turn the ATV around on any hill until you have mastered the turning
technique described in this manual on level ground. Avoid crossing the side of a steep hill if
possible.
●
Always use proper procedures if you stall or roll backwards when climbing a hill. To avoid stalling, use the 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
●
Always be careful when skidding or sliding. Learn to safely control skidding or sliding by practicing at low speeds and on level, smooth terrain. On extremely slippery surfaces, such as ice,
go slowly and be very cautious in order to reduce the chance of skidding or sliding out of control.
●
Never operate an ATV in fast flowing water or in water deeper than that recommended in this
manual. Remember that wet brakes may have reduced stopping ability. Test your brakes after
leaving water. If necessary, apply them several times to let friction dry out the linings.
●
Always be sure there are no obstacles or people behind you when you operate in reverse.
When it is safe to proceed in reverse, go slowly.
●
Always use the size and type of tires specified in this manual.
●
Always maintain proper tire pressure as 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
WARNI NG
POTENTIAL HAZARD
Improper handling of gasoline.
WHAT CAN HAPPEN
Gasoline can catch fire and you could
be burned.
HOW TO AVOID THE HAZARD
Always turn off the engine when refueling.
Do not refuel immediately after the engine has been running and is still very
hot.
Do not spill gasoline on the engine or
exhaust pipe/muffler when refueling.
Never refuel while smoking, or in the vicinity of sparks, open flames, or other
sources of ignition such as the pilot
lights of water heaters and clothes dryers.
When transporting the ATV in another
vehicle, be sure it is kept upright and
that the fuel cock is in the “OFF” position. Otherwise, fuel may leak out of the
carburetor or fuel tank.
WHAT CAN HAPPEN
Gasoline is poisonous and can cause
injuries.
HOW TO AVOID THE HAZARD
If you should swallow some gasoline or
inhale a lot of gasoline vapor, or get
some gasoline in your eyes, see your
doctor immediately.
If gasoline spills on your skin, wash with
soap and water. If gasoline spills on
your clothing, change your clothes.
2-5
WARNI NG
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 ATV in an area with
adequate ventilation.
2-6
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1-
DESCRIPTION AND MACHINE IDENTIFICATION
1. Spark arrester
2. Storage compartment
3. Air filter case
4. Engine oil dipstick
5. Front brake fluid reservoir
6. Brake pedal
7. Clutch adjusting bolt
8. Engine oil filter element
9. Rear brake light switch
10. Headlight
11. Fuel cock
12. Recoil starter
13. Fuses
14. Battery
15. Tail/brake light
16. Rear shock absorber spring
preload adjusting ring
17. Engine oil drain bolt
18. Shift pedal
19. Rear brake lever
20. Handlebar switches
21. Parking brake
22. Starter (choke)
23. Drive select lever
24. Main switch
25. Fuel tank cap
26. Throttle lever
27. Front brake lever
NOTE:
The machine you have purchased may differ slightly
from those shown in the figures of this manual.
3-1
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Identification number records
Record the key identification number, vehicle
identification number and model label information in the spaces provided for assistance
when ordering spare parts from a Yamaha
dealer or for reference in case the vehicle is
stolen.
1. KEY IDENTIFICATION NUMBER:
ACA-02E
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Key identification number
The key identification number is stamped on
the key as shown in the following illustration.
This number can be used for ordering a new
key.
1
2
3
4
5
6
7
8
2. VEHICLE IDENTIFICATION NUMBER:
ACA-02E
3. MODEL LABEL INFORMATION:
ACA-01E
1. Key identification number
3-2
9
10
11
12
13
14
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Vehicle identification number
The vehicle identification number is stamped
into the frame.
1. Vehicle identification number
NOTE:
The vehicle identification number is used to
identify your machine.
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Model label
The model label is affixed to the location in the
illustration. Record the information on this label in the space provided. This information will
be needed to order spare parts from your
Yamaha dealer.
1. Model label
3-3
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CONTROL FUNCTIONS
WARNING
Indicates a potential hazard that could
result in serious injury or death.
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Main switch
Functions of the respective switch positions
are as follows:
1
2
3
4
5
6
7
ON:
The engine can be started only at this position
and the headlights and taillight come on when
the light switch is on.
OFF:
All electrical circuits are switched off. The key
can be removed in this position.
8
9
10
11
12
13
14
4-1
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Indicator lights
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Handlebar switches
1. Reverse indicator light “R”
2. Neutral indicator light “N”
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Reverse indicator light “R”
This indicator light comes on when the drive
select lever is in the “R” position.
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Neutral indicator light “N”
This indicator light comes on when the transmission is in neutral.
1. Light switch “OFF/ / ”
2. Engine stop switch “ / ”
3. Start switch “”
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Engine stop switch “ / ”
Make sure that the engine stop switch is set to
“” before starting the engine. The engine
stop switch controls ignition and can be used
at all times to stop the engine, especially in an
emergency. The engine will not start or run
when the engine stop switch is set to “”.
4-2
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Light switch “OFF/ / ”
Set the switch to “” to turn on the low beam
and the taillight.
Set the switch to “” to turn on the high
beam and the taillight.
Set the switch to “OFF” to turn off all the lights.
CAUTION:
_
Do not use the headlights 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.
_
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Start switch “”
The starter motor cranks the engine when this
switch is pushed.
CAUTION:
_
See starting instructions prior to starting
the engine. (See page 6-1 for details.)
_
4-3
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Throttle lever
Once the engine is running, movement of the
throttle lever will increase the engine speed.
Regulate the speed of the machine by varying
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 throttle
to be sure it is operating smoothly. Make sure
it returns to the idle position as soon as the lever is released.
WARNI NG
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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Speed limiter
The speed limiter keeps the throttle from fully
opening, even when the throttle lever is
pushed to the maximum. Turning in the adjusting screw limits the maximum engine power available and decreases the maximum
speed of the ATV.
1. Locknut 2. Adjusting screw
a. No more than 12 mm (0.47 in)
WARNI NG
POTENTIAL HAZARD
Improper adjustment of the speed limiter and throttle.
WHAT CAN HAPPEN
The throttle cable could be damaged.
Improper throttle operation could result.
You could lose control, have an accident or be injured.
HOW TO AVOID THE HAZARD
Do not turn the adjusting screw out
more than 12 mm (0.47 in). Always make
sure the throttle lever free play is adjusted to 3.0–5.0 mm (0.12–0.20 in). See
page 8-25.
4-5
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Front brake lever
The front brake lever is located on the right
handlebar. Pull it toward the handlebar to apply the front brake.
1. Front brake lever
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Brake pedal and rear brake lever
The brake pedal is located on the right side of
the ATV and the rear brake lever is located on
the left handlebar. Push down on the pedal or
pull the lever toward the handlebar to apply
the rear brake.
1. Brake pedal
4-6
1. Rear brake lever
4-7
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Parking brake
Use the parking brake when you have to start
the engine or park the machine, especially on
a slope. Apply the rear brake lever and push
down the lock plate to apply the parking
brake. Squeeze the rear brake lever to release the parking brake.
1. Lock plate
WARNI NG
POTENTIAL HAZARD
Improper use of the parking brake.
WHAT CAN HAPPEN
The ATV could start moving unexpectedly 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 performance 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.
Always be sure you have released the
parking brake before you begin to ride.
4-8
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