2001 YAMAHA YFM400F air filter

ER
Yuki_Data:Yuki_data:Yuki:Yuki_1:ATV:HM00B061_YFM400FWA-61:YFM600TOC-
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
67
8

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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.

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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
and the check hose on the V-belt cooling duct.
Wash the ATV in fresh water if it has been op-erated in salt water or muddy conditions.
1. Air filter case check hose
1. Flexible de contrôle du boîtier de filtre à air
1. Manguera de comprobación de la caja del filtro de aire

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EBU00262
PERIODIC MAINTENANCE/LUBRICATION
ITEM ROUTINEINITIAL EVERY
1
month3
months6
months6
months1
year
Valves*

• Check valve clearance.
• Adjust if necessary.
Cooling system
• Check coolant leakage.
• Repair if necessary.
• Replace coolant every 24 months.
Spark plug
• Check condition.
• Adjust gap and clean.
• Replace if necessary.
Air filter
• Clean.
• Replace if necessary.Every 20~40 hours
(More often in wet or dusty areas.)
Crankcase breather
system*

• Check breather hose for cracks or damage.
• Replace if necessary.

Exhaust system*

• Check for leakage.
• Retighten if necessary.
• Replace gasket(s) if necessary.

Carburetor*

• Check and adjust idle speed/starter operation.
• Adjust if necessary.

Fuel line*

• Check fuel hose for cracks or damage.
• Replace if necessary.

Engine oil

• Replace (Warm engine before draining).

Engine oil filter cartridge

• Replace.

Engine oil strainer*

• Clean.

Final gear oil

• Check oil level/oil leakage.
• Replace every 12 months.

Differential gear oil
Front brake*

• Check operation/fluid leakage/see NOTE page 8-8.
• Correct if necessary.

Rear brake*

• Check operation/fluid leakage/see NOTE page 8-8.
• Correct if necessary.

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Air filter cleaningNOTE: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 elementand air filter case.
1. Remove the seat.
2. Remove the air filter case cover.
1. Air filter case check hose
1. Flexible de contrôle du boîtier de filtre à air
1. Manguera de comprobación de la caja del filtro de aire1. Clip (´ 4) 2. Air filter cover
1. Clip (´ 4) 2. Couvercle de filtre à air
1. Retenedor (´ 4) 2. Cubierta del filtro de aire

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3. Remove the air filter element, and sepa-
rate it from the guide.
4. Wash the element gently but thoroughly
in solvent.
WARNING
Always use parts cleaning solvent to clean the
air filter element. Never use low flash point
solvents or gasoline to clean the air filter ele-
ment because the engine could catch fire orexplode.
5. Squeeze the excess solvent out of the fil-
ter and let it dry.CAUTION:Do not twist the filter element when squeez-ing it.
6. Inspect the element. If damaged, replace
it.
7. Apply SAE 10W30 motor oil to the ele-
ment.NOTE:The element should be wet but not dripping.
1. Air filter element
1. Élément de filtre à air
1. Elemento del filtro de aire1. Air filter guide
1. Guide de filtre à air
1. Filtro de aire guía

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8. Reinstall the element to the element
guide.
9. Reinstall the element assembly and parts
removed for access.NOTE:The air filter element should be cleaned every
20 ~ 40 hours. It should be cleaned and lubri-
cated more often if the machine is operated in
extremely dusty areas. Each time filter element
maintenance is performed, check the air inlet
to the filter case for obstructions. Check the air
cleaner rubber joint to the carburetor and man-
ifold fittings for an air-tight seal. Tighten all fit-
tings securely to avoid the possibility ofunfiltered air entering the engine.CAUTION:Never operate the engine with the air filter el-
ement removed. This will allow unfiltered air
to enter, causing rapid engine wear and possi-
ble engine damage. Additionally, operation
without the filter element will affect carbure-
tor jetting with subsequent poor performanceand possible engine overheating.
1. Connect the hose.
1. Brancher le flexible.
1. Conecte la manguera.