2004 YAMAHA BIG BEAR PRO 400 check oil

8-21
12. Install the clamp by installing the screw.
13. Install the shift pedal by installing the bolt.
14. Warm up the engine for several minutes at
idle speed. Check for oil leakage while warm-
ing up.CAUTION:_ If oil leakage is found, stop the engine immedi-
ately and check for the cause. _
U4SH6B.book Page 21 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

8-27 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
1. Bolt (× 3)
1. Boulon (× 3)
1. Perno (× 3)
EBU11452
Final gear oil
Final gear oil measurement
1. Place the machine 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.
Final gear oil replacement
1. Remove the final gear case cover by remov-
ing the bolts.
2. Place the machine on a level surface.
3. Place a container under the final gear case to
collect the used oil.
U4SH6B.book Page 27 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

8-35 1. Boot (× 2)
1. Soufflet (× 2)
1. Guardapolvo (× 2)
1. Boot (× 2)
1. Soufflet (× 2)
1. Guardapolvo (× 2)
6. Install the filler bolt and tighten it to specifica-
tion.
7. Check for oil leakage. If oil leakage is found,
check for the cause.
EBU00862
Axle boots
Check the protective boots for holes or tears. If any
damage is found, have them replaced by a
Yamaha dealer.Tightening torque:
Filler bolt (differential gear case):
23 Nm (2.3 m·kgf)
U4SH6B.book Page 35 Tuesday, May 27, 2003 4:39 PM

8-59
Observe these precautions:

When checking the brake fluid level, make sure
the top of the brake fluid reservoir is level.


Use only the designated quality brake fluid, oth-
erwise, the rubber seals may deteriorate, caus-
ing leakage and poor brake performance.


Refill with the same type of brake fluid. Mixing
fluids may result in a harmful chemical reaction
and lead to poor brake performance.


Be careful that water does not enter the brake
fluid reservoir when refilling. Water will signifi-
cantly lower the boiling point of the fluid and
may result in vapor lock.


Brake fluid may deteriorate painted surfaces or
plastic parts. Always clean up spilled fluid im-
mediately.


Have a Yamaha dealer check the cause if the
brake fluid level goes down. Recommended brake fluid: DOT 4
U4SH6B.book Page 59 Tuesday, May 27, 2003 4:39 PM