2004 YAMAHA BIG BEAR PRO 400 drain bolt

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

8-23 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)
E-8.fm Page 23 Thursday, May 29, 2003 11:49 AM

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

8-29 1. Drain bolt
1. Boulon de vidange
1. Perno de drenaje
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.CAUTION:_ Be sure no foreign material enters the final
gear case. _
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:
0.25 L
U4SH6B.book Page 29 Tuesday, May 27, 2003 4:39 PM

8-31 1. Oil filler bolt
1. Boulon de l’orifice de remplissage d’huile
1. Perno del orificio de llenado de aceite
7. Install the oil filler bolt.
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.
EBU00826
Differential gear oil replacement
1. Place the machine on a level place.
2. Place a container under the differential gear
case to collect the used oil.
3. Remove the filler bolt and drain bolts to drain
the oil. Tightening torque:
Final gear case cover bolt:
23 Nm (2.3 m·kgf)
U4SH6B.book Page 31 Tuesday, May 27, 2003 4:39 PM

8-33 a. Front drain bolt
b. Rear drain bolt
a. Boulon de vidange avant
b Boulon de vidange arrière
a. Perno de drenaje delantero
b. Perno de drenaje trasero
4. Install the drain bolts and tighten to specifica-
tion.
5. Fill the differential gear case with oil.CAUTION:_ Be sure no foreign material enters the differen-
tial gear case. _
Tightening torque:
Drain bolt (differential gear case):
a 23 Nm (2.3 m·kgf)
b 16 Nm (1.6 m·kgf)
Recommended oil:
See page 10-3.
Oil quantity:
Periodic oil change:
0.47 L
Total amount:
0.50 L
U4SH6B.book Page 33 Tuesday, May 27, 2003 4:39 PM