2005 YAMAHA BIG BEAR PRO 400 checking oil

4-5
EBU00733
Oil temperature warning light checking method
ACB-10E
Turn the main switch to “ON” and the
engine stop switch to “”.
Oil temperature warning
light does not come on.
Oil temperature warning
light comes on.
Check engine oil temperature.
Oil temperature warning
light does not come on.
Engine oil temperature and
electrical circuit are OK. Go
ahead with riding.
Push start switch with the
transmission in neutral.
Ask a Yamaha dealer to
inspect the electrical circuit.
Oil tempera-
ture is low.
Allow to cool.
Oil tempera-
ture is high.
Oil temperature
warning light comes
on momentarily.
U1C160.book Page 5 Wednesday, May 12, 2004 4:55 PM

8-17 1. Engine oil filler cap
1. Bouchon de remplissage d’huile de moteur
1. Tapa del orificio de llenado de aceite de motor
1. Dipstick 2. Maximum level mark
3. Minimum level mark
1. Jauge 2. Repère de niveau maximum
3. Repère de niveau minimum
1. Varilla 2. Marca de nivel máximo
3. Marca de nivel minimo
EBU12334
Engine oil and oil filter element
The engine oil level should be checked before
each ride. In addition, the oil must be changed and
the oil filter element cleaned at the intervals speci-
fied in the periodic maintenance and lubrication
chart.
To check the engine oil level
1. Place the ATV on a level surface.
2. Warm up the engine for several minutes, and
then turn it off.
3. Wait a few minutes until the oil level settles
before checking.
4. Remove the engine oil filler cap, and then
wipe the dipstick off with a clean rag. Insert
the dipstick in the filler hole (without screwing
it in), and then remove it again to check the oil
level.NOTE:_ The oil level should be between the minimum and
maximum level marks. _
U1C160.book Page 17 Wednesday, May 12, 2004 4:55 PM

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

8-33 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

8-65
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
U1C160.book Page 65 Wednesday, May 12, 2004 4:55 PM