2005 YAMAHA BIG BEAR PRO 400 oil

8-23 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)
11. Install the oil filter element cover by installing
the bolts, and then tighten them to the speci-
fied torque.
12. Install the oil strainer, compression spring,
O-ring and engine oil drain bolt. Tighten the
engine oil drain bolt to the specified torque.CAUTION:_ Before installing the engine oil drain bolt, be
sure to install the O-ring, compression spring
and oil strainer. _
Tightening torque:
Oil filter element cover bolt:
10 Nm (1.0 m·kgf)
Tightening torque:
Engine oil drain bolt:
32 Nm (3.2 m·kgf)
U1C160.book Page 23 Wednesday, May 12, 2004 4:55 PM

8-25
13. Add the specified amount of the recommend-
ed engine oil, and then install and tighten the
engine oil filler cap.CAUTION:_

In order to prevent clutch slippage (since
the engine oil also lubricates the clutch),
do not mix any chemical additives. Do not
use oils with a diesel specification of “CD”
or oils of a higher quality than specified. In
addition, do not use oils labeled “ENERGY
CONSERVING II” or higher.


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
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8-27
14. Install the clamp by installing the screw.
15. Install the shift pedal by installing the bolt.
16. Start the engine, and then let it idle for seve-
ral minutes while checking it for oil leakage. If
oil is leaking, immediately turn the engine off
and check for the cause.
17. Turn the engine off, and then check the oil
level and correct it if necessary.
U1C160.book Page 27 Wednesday, May 12, 2004 4:55 PM

8-29 1. Bolt (× 3)
1. Boulon (× 3)
1. Perno (× 3)
1. Oil filler bolt
1. Boulon de l’orifice de remplissage d’huile
1. Perno del orificio de llenado de aceite
EBU00462
Transfer gear oil replacementNOTE:When replacing the transfer gear oil, replace the
engine oil also.1. Remove the transfer gear case guard.
2. Place the machine on a level place.
3. Place a container under the transfer gear
case.
4. Remove the oil filler bolt and drain bolt to
drain the oil.
5. Install the drain bolt and tighten to specifica-
tion.
Tightening torque:
Drain bolt (transfer gear case):
20 Nm (2.0 m·kgf)
U1C160.book Page 29 Wednesday, May 12, 2004 4:55 PM

8-31 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)
U1C160.book Page 31 Wednesday, May 12, 2004 4:55 PM

8-33 1. Final gear oil 2. Correct oil level
3. Oil filler bolt
1. Huile de transmission finale 2. Niveau d’huile correct
3. Boulon de l’orifice de remplissage d’huile
1. Aceite de la transmisión final 2. Nivel de aceite correcto
3. Perno del orificio de llenado de aceite
EBU11453
Final gear oil
Checking the final gear oil
1. Place the ATV on a level surface.
2. Remove the oil filler bolt, and then check the
oil level in the final gear case.NOTE:_ The oil level should be at the brim of the filler hole. _3. If the oil is below the brim of the filler hole,
add sufficient oil of the recommended type to
raise it to the correct level.CAUTION:_ Be sure no foreign material enters the final
gear case. _4. Install the oil filler bolt, and then tighten it to
the specified torque.
Tightening torque:
Final gear oil filler bolt:
23 Nm (2.3 m·kgf)
U1C160.book Page 33 Wednesday, May 12, 2004 4:55 PM

8-35 1. Bolt (× 3)
1. Boulon (× 3)
1. Perno (× 3)
1. Drain bolt
1. Boulon de vidange
1. Perno de drenaje
Replacing the final gear oil
1. Remove the final gear case cover by remov-
ing the bolts.
2. Place the ATV on a level surface.
3. Place a container under the final gear case to
collect the used oil.
4. Remove the oil filler bolt and the drain bolt to
drain the oil.
5. Install the drain bolt, and then tighten it to the
specified torque.
6. Add the recommended final gear oil to the
brim of the filler hole. Tightening torque:
Final gear oil drain bolt:
23 Nm (2.3 m·kgf)
Recommended oil:
SAE 80 API GL-4 Hypoid gear oil
Oil quantity:
0.19 L
U1C160.book Page 35 Wednesday, May 12, 2004 4:55 PM

8-37
CAUTION:_ Be sure no foreign material enters the final
gear case. _7. Install the oil filler bolt, and then tighten it to
the specified torque.
8. Check for oil leakage. If oil leakage is found,
check for the cause.
9. Install the final gear case cover bolts, and
then tighten them to the specified torque. Tightening torque:
Final gear oil filler bolt:
23 Nm (2.3 m·kgf)
Tightening torque:
Final gear case cover bolt:
23 Nm (2.3 m·kgf)
U1C160.book Page 37 Wednesday, May 12, 2004 4:55 PM