light YAMAHA YFM400F 2001 Owners Manual

Yuki_Data:Yuki_data:Yuki:Yuki_1:ATV:HM00B061_YFM400FWA-61:YFM600TOC-
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EBU00015
CONTENTS
LOCATION OF THE WARNING AND
SPECIFICATION LABELS ....................... 1-1
SAFETY INFORMATION ........................ 2-1
DESCRIPTION AND MACHINE
IDENTIFICATION .................................... 3-1
Identification number records ........... 3-3
Key identification number ................. 3-5
Vehicle identification number ........... 3-5
Model label ......................................... 3-7
CONTROL FUNCTIONS ......................... 4-1
Main switch......................................... 4-1
Indicator lights .................................... 4-3
Coolant temperature indicator light
checking method .............................. 4-7
Speedometer .................................... 4-11
Fuel gauge ........................................ 4-13
Handlebar switches .......................... 4-15
Throttle lever .................................... 4-21
Speed limiter .................................... 4-23
Front brake lever .............................. 4-25Rear brake pedal and lever.............. 4-27
Drive select lever .............................. 4-29
Recoil starter..................................... 4-29
Fuel tank cap..................................... 4-31
Fuel cock ........................................... 4-33
Starter (choke) “ ” ........................ 4-35
Seat ................................................... 4-37
Storage box ...................................... 4-39
Front carrier ...................................... 4-39
Rear carrier ....................................... 4-39
Front shock absorber
adjustment...................................... 4-41
Rear shock absorber
adjustment...................................... 4-45
Auxiliary DC jack .............................. 4-49
PRE-OPERATION CHECKS .................... 5-1
Front and rear brakes......................... 5-7
Fuel .................................................... 5-11
Engine oil .......................................... 5-15
Final gear oil ..................................... 5-19
Differential gear oil .......................... 5-21
Throttle lever .................................... 5-21
Fittings and Fasteners...................... 5-21
1234
5

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Lights ................................................ 5-23
Switches ........................................... 5-23
Tires .................................................. 5-25
How to measure tire pressure ........ 5-29
Tire wear limit .................................. 5-31
OPERATION ........................................... 6-1
Starting a cold engine ....................... 6-3
Starting a warm engine ..................... 6-9
Warming up ........................................ 6-9
Drive select lever operation and
reverse driving ............................... 6-11
Engine break-in ................................ 6-17
Parking .............................................. 6-19
Parking on a slope ........................... 6-21
Accessories and loading ................. 6-23
RIDING YOUR ATV ................................ 7-1
Getting to know your ATV ................. 7-3
Ride with care and good
judgement ........................................ 7-5
Be careful where you ride ............... 7-27
Turning your ATV ............................ 7-39
Climbing uphill ................................. 7-45
Riding downhill ................................ 7-55
Crossing a slope ............................... 7-59Crossing through shallow
water ............................................... 7-63
Riding over rough terrain ................ 7-69
Sliding and skidding ........................ 7-71
What to do if ..................................... 7-75
What to do... ..................................... 7-75
PERIODIC MAINTENANCE AND
ADJUSTMENT ....................................... 8-1
Owner’s manual and tool kit ............. 8-3
Periodic maintenance/
lubrication ........................................ 8-7
Panel removal and installation ....... 8-15
Engine oil .......................................... 8-31
Final gear oil ..................................... 8-41
Differential gear oil .......................... 8-47
Cooling system ................................ 8-53
Changing the coolant ...................... 8-57
Front axle boots ............................... 8-63
Spark plug ........................................ 8-65
Air filter cleaning.............................. 8-71
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V-belt cooling duct check hose ....... 8-77
Carburetor adjustment..................... 8-81
Idle speed adjustment...................... 8-83
Valve clearance adjustment ............ 8-85
Throttle lever adjustment ................ 8-87
Front brake pad inspection .............. 8-89
Rear brake pad inspection ............... 8-89
Inspecting the brake fluid level ....... 8-91
Brake fluid replacement ................... 8-95
Front brake adjustment.................... 8-97
Rear brake lever adjustment ........... 8-99
Cable inspection and
lubrication ..................................... 8-103
Brake lever and brake pedal
lubrication ..................................... 8-105
Wheel removal ............................... 8-107
Wheel installation........................... 8-109
Battery ............................................. 8-111
Battery maintenance ...................... 8-115
Fuse replacement ........................... 8-117
Replacing the headlight bulb ........ 8-121
Headlight beam adjustment .......... 8-125
Taillight bulb replacement............. 8-127
Troubleshooting ............................. 8-129
Troubleshooting chart ................... 8-131CLEANING AND STORAGE................... 9-1
A. Cleaning ......................................... 9-1
B. Storage ........................................... 9-7
SPECIFICATIONS ................................. 10-1
HOW TO USE THE CONVERSION
TABLE ................................................... 11-1
91011

2-15
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WARNING

l
Always turn off the engine when refuel-
ing.
l
Do not refuel right after the engine has
been running and is still very hot.
l
Do not spill gasoline on the engine or ex-
haust pipe/muffler when refueling. Never
refuel while smoking, or while in the vi-
cinity of sparks, open flames, or other
sources of ignition such as the pilot lights
of water heaters and clothes dryers. Gas-
oline can catch fire and you could be
burned.
l
When transporting the machine in anoth-
er vehicle, be sure it is kept upright and
that the fuel cock is in the “OFF” position.
Otherwise, fuel may leak out of the carbu-
retor or fuel tank.
l
Gasoline is poisonous. If you should swal-
low some gasoline or inhale a lot of gaso-
line vapor, or get some gasoline in your
eyes, see your doctor immediately. If gas-
oline spills on your skin, wash with soap
and water. If gasoline spills on your cloth-
ing, change your clothes.

3-1
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EBU00032
DESCRIPTION AND MACHINE
IDENTIFICATION
1. Rear spring preload
adjusting ring
2. Storage box and tool kit
3. Spark plug
4. Rear brake fluid
reservoir
5. Radiator cap
6. Front spring preload
adjusting ring
7. V-belt case
8. Rear brake pedal
9. Front spring preload
adjusting ring
10. Fuel cock
11. Air filter case
12. Fuses13. V-belt cooling duct
check hose
14. Coolant reservoir
15. Oil filter cartridge
16. Engine oil dipstick
17. Rear brake lever
18. Left handlebar switches
19. Starter (choke)
20. Horn switch
21. Drive select lever
22. Speedometer
23. Main switch
24. Fuel tank cap
25. Auxiliary DC jack
26. Right handlebar switch
27. Throttle lever
28. Front brake lever
NOTE:

The machine you have purchased may differ
slightly from those shown in the figures of this
manual.

4-1
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1. Main switch
1. Contacteur à clé
1. Interruptor principal
EBU00040
CONTROL FUNCTIONS
EBU00041
Main switch
Functions of the respective switch positions
are as follows:
ON:
Engine can be started only at this position and
the headlight 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.

4-3
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1. Park indicator light “P”
2. Reverse indicator light “R”
3. Neutral indicator light “N”
4. Coolant temperature warning light “ ”
5. Four-wheel-drive indicator light “ ”
1. Témoin de stationnement “P”
2. Témoin de marche arrière “R”
3. Témoin de point mort “N”
4. Témoin d’avertissement de la température du liquide de
refroidissement “ ”
5. Témoin 4x4 “ ”
1. Luz de indicatora de estacionamiento “P”
2. Luz de control de marcha atrás “R”
3. Luz de control de punto muerto “N”
4. Luz de aviso de la temperatura del refrigerante “ ”
5. Luz de control del modo de tracción de cuatro
ruedas “ ”
EBU00043
Indicator lights
EBU00609
Park indicator light “P”
This indicator light comes on when the drive
select lever is in the “P” (park) position.
EBU00602
Reverse indicator light “R”
This indicator light comes on when the trans-
mission is in reverse.
EBU00603
Neutral indicator light “N”
This indicator light comes on when the trans-
mission is in neutral.
EBU00713
Coolant temperature warning light “ ”
When the coolant temperature reaches a spec-
ified level, this light comes on to warn that the
coolant temperature is too hot. If the light
comes on during operation, stop the engine as
soon as it is safe to do so and allow the engine
to cool down for about 10 minutes.

4-5
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The coolant temperature warning light circuit
can be checked according to the procedure on
page 4-7.
CAUTION:

l
The engine may overheat if the ATV is
overloaded. If this happens, reduce the
load to specification.
l
Restart after making sure that the light is
out. Continuous use while the light is on
may cause damage to the engine.
EBU00605
Four-wheel-drive indicator light “ ”
This indicator light comes on when the
2WD/4WD switch is in the 4WD position.
NOTE:

Due to the synchronizing mechanism in the dif-
ferential gear case, the light may not come on
until the ATV starts moving.

4-7
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EBU00714
Coolant temperature warning light checking method
ACB-09E
Turn the main switch to “ON” and
the engine stop switch to “ ”.
Coolant temperature warning
light does not come on.
Coolant temperature
warning light comes on.
Coolant temperature
warning light does
not come on.
Coolant temperature and
electrical circuit are OK.
Go ahead with riding.
Push the start switch with the
transmission in the neutral position.
Ask a Yamaha dealer to
inspect the electrical circuit.
Coolant temperature
warning light comes
on momentarily.

4-15
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EBU00053
Handlebar switches
EBU00735
Light switch
Turn the switch to the “ ” position to switch
on the low beam and the taillight.
Turn the switch to the “ ” 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:

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 re-
charge it.
EBU00606
Engine stop switch
Make sure that the engine stop switch is in the
“ ” position. The engine stop switch con-
trols 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 en-
gine stop switch is turned to “ ”.
1. Lights switch
2. Engine stop switch
3. Start switch “ ”
4. Horn switch “ ”
1. Contacteur d’éclairage
2. Coupe-circuit du moteur
3. Contacteur du démarreur “ ”
4. Contacteur de l’avertisseur “ ”
1. Interruptor de luces
2. Interruptor de paro del motor
3. Interruptor de arranque “ ”
4. Interruptor de la bocina “ ”