oil filter YAMAHA BIG BEAR PRO 400 2004 Owners Manual

Tires ....................................................5-19
How to measure tire pressure .............5-23
Tire wear limit......................................5-25
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
Reverse lock release wire ...................6-15
Shifting ................................................6-17
To start out and accelerate: ................6-19
To decelerate ......................................6-21
Engine break-in ...................................6-23
Parking ................................................6-27
Parking on a slope ..............................6-27
Accessories and loading .....................6-29
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 ................................7-41
Climbing uphill.....................................7-47
Riding downhill ....................................7-57
Crossing a slope .................................7-61
67
Crossing through shallow water ......... 7-65
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
Engine oil ............................................ 8-13
Transfer gear oil replacement............. 8-23
Final gear oil ....................................... 8-27
Differential gear oil replacement ......... 8-31
Axle boots ........................................... 8-35
Spark plug inspection ......................... 8-37
Air filter cleaning ................................. 8-41
Carburetor adjustment ........................ 8-49
Idle speed adjustment ........................ 8-51
Valve clearance adjustment ............... 8-53
Select lever safety system cable
adjustment ........................................ 8-53
Throttle lever adjustment .................... 8-55
Front brake pad check ........................ 8-55
Rear brake shoe inspection ................ 8-57
Brake fluid level check ........................ 8-57
Brake fluid replacement ...................... 8-61
8
U4SH6B.book Page 2 Tuesday, May 27, 2003 4:39 PM

8-7
EBU00262
PERIODIC MAINTENANCE/LUBRICATION
ITEM ROUTINEINITIAL EVERY
1
month3
months6
months6
months1
year
Valves*Check valve clearance.
Adjust if necessary.Spark plugCheck condition.
Adjust gap and clean.
Replace if necessary.Air filter elementClean.
Replace if necessary.Every 20–40 hours
(More often in wet or dusty areas.)
Carburetor*Check starter (choke) operation.
Adjust engine idling speed.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.Fuel line*Check fuel hose for cracks or damage.
Replace if necessary.Engine oil
Replace (Warm engine before draining).Transfer gear oil
Engine oil filter element
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.
Adjust if necessary.Clutch*Check operation.
Adjust if necessary.U4SH6B.book Page 7 Tuesday, May 27, 2003 4:39 PM

8-15 1. Clamp
1. Bride
1. Mordaza
1. Drain bolt (engine oil) 2. O-ring
3. Compression spring 4. Oil strainer
1. Boulon de vidange (huile de moteur) 2. Joint torique
3. Ressort de compression 4. Crépine à huile
1. Perno de drenaje (aceite del motor) 2. Junta tórica
3. Muelle de compresión 4. Colador de aceite
Engine oil replacement and oil filter cleaning
1. Place the ATV on a level surface.
2. Warm up the engine for several minutes, and
then stop it.
3. Place a container under the engine to collect
the used oil.
4. Remove the clamp by removing the screw.
5. Remove the engine oil filler cap and drain bolt
to drain the oil.CAUTION:_ When removing the drain bolt, the compres-
sion spring, oil strainer and O-ring will fall out.
Take care not to lose these parts. _
U4SH6B.book Page 15 Tuesday, May 27, 2003 4:39 PM

8-17 1. Engine oil filter element cover bolt (× 3)
2. Oil filter element cover
1. Boulon de couvercle de l’élément de filtre à huile moteur (× 3)
2. Couvercle de l’élément de filtre à huile
1. Perno de la tapa del elemento del filtro de aceite de motor (× 3)
2. Tapa del elemento del filtro de aceite
1. Engine oil filter element 2. O-ring (× 2)
1.Élément du filtre à huile moteur 2. Joint torique (× 2)
1. Element del filtro de aceite de motor 2. Junta tórica (× 2)
6. Remove the shift pedal by removing the bolt.
7. Remove the oil filter element cover, and then
the oil filter element.
8. Clean the oil strainer and oil filter element
with solvent.
9. Inspect the O-ring and replace it if damaged.
10. Install the oil filter element, O-ring, oil filter el-
ement cover, compression spring, oil strainer
and drain bolt. Tighten the drain bolt to the
specified torque.CAUTION:_ Before installing the drain bolt, be sure to in-
stall the O-ring, compression spring and oil
strainer. _
Tightening torque
Drain bolt (engine):
32 Nm (3.2 m·kgf)
Oil filter element cover bolt:
10 Nm (1.0 m·kgf)
U4SH6B.book Page 17 Tuesday, May 27, 2003 4:39 PM

8-19
11. Fill the engine with oil and install the oil filler
cap.CAUTION:_ Make sure that no foreign material enters the
crankcase. _
Recommended oil:
See page 10-2.
Oil quantity:
Without oil filter element replacement:
2.40 L
With oil filter element replacement:
2.50 L
U4SH6B.book Page 19 Tuesday, May 27, 2003 4:39 PM

8-25 1. Drain bolt
1. Boulon de vidange
1. Perno de drenaje
6. Fill the transfer gear case with oil.CAUTION:
Be sure no foreign material enters the transfer
gear case.7. Install the filler bolt and tighten to specifica-
tion.
8. Check for oil leakage. If oil leakage is found,
check for the cause.
9. Reinstall the transfer gear case guard.Recommended oil: See page 10-2
Quantity:
Transfer gear oil and engine oil with
filter replacement:
2.8 L
Tightening torque:
Filler bolt (transfer gear case):
23 Nm (2.3 m·kgf)
U4SH6B.book Page 25 Tuesday, May 27, 2003 4:39 PM

8-43 1. Air filter element
1.Élément du filtre à air
1. Elemento del filtro de aire
1. Element plate 2. Air filter element
3. Frame
1. Plaque d’élément 2.Élément du filtre à air
3. Armature
1. Placa del elemento 2. Elemento del filtro de aire
3. Bastidor
3. Remove the air filter element.
4. Remove the air filter element from the frame.
5. Wash the air filter element gently but thor-
oughly in solvent.
WARNING
_ Always use parts cleaning solvent to clean the
air filter element. Never use low flash point sol-
vents or gasoline to clean the air filter element
because the engine could catch fire or ex-
plode. _6. Squeeze the excess solvent out of the air fil-
ter element and let it dry.CAUTION:_ Do not twist the air filter element when squeez-
ing it. _7. Inspect the air filter element. If damaged, re-
place it.
8. Apply SAE 10W30 engine oil to the air filter
element.NOTE:_ The air filter element should be wet but not drip-
ping. _
U4SH6B.book Page 43 Tuesday, May 27, 2003 4:39 PM

10-3
Quantity:
Periodic oil change (engine oil): 2.40 L
Periodic oil change
(engine oil with oil filter replacement): 2.50 L
Periodic oil change
(engine oil and transfer gear oil with
oil filter replacement):2.8 L
Transfer gear case oil 0.3 L
Final gear oil:
Type SAE 80 API GL-4 Hypoid gear oil
Quantity
Periodic oil change 0.19 L
Total amount 0.25 L
Air filter: Wet element
Differential gear oil:
Type SAE80 API GL-4 Hypoid gear oil
Quantity:
Periodic oil change 0.47 L
Total amount 0.50 LModel YFM400FP/YFM400FW
U4SH6B.book Page 3 Tuesday, May 27, 2003 4:39 PM