2003 YAMAHA BIG BEAR PRO 400 engine

4-33
EBU00095
Starter (choke) “”
Starting a cold engine requires a richer air-fuel
mixture. A separate starter circuit supplies this
mixture.
Move in direction
a to turn on the starter (choke).
Move in direction
b to turn off the starter (choke).
Refer to “Starting a cold engine” for proper opera-
tion. (See page 6-3.)
EE.book Page 33 Monday, June 18, 2001 10:18 AM

4-43 1. Auxiliary DC jack 2. Cap
1. Connecteur pour accessoires 2. Capuchon
1. Toma de CC auxiliar 2. Tapa
EBU00748
Auxiliary DC jack
The auxiliary DC jack is located at the front right
side of the ATV. The auxiliary DC jack can be used
for suitable work lights, radios, etc. The auxiliary
DC jack can only be used when the main switch is
in the “ON” position.
1. Turn the headlight switch to the “OFF” posi-
tion.
2. Start the engine. (See pages 6-3 ~ 6-7.)
3. Open the auxiliary DC jack cap and insert the
accessory power plug into the jack.
4. When the auxiliary DC jack is not being used,
cover it with the cap. Maximum rated capacity for the auxiliary
DC jack:
DC 12 V, 120 W (10 A)
EE.book Page 43 Monday, June 18, 2001 10:18 AM

4-45
CAUTION:_

Do not use accessories requiring more
than the above maximum capacity. This
may overload the circuit and cause the
fuse to blow.


If accessories are used without the engine
running or with the headlight turned on,
the battery will lose its charge and engine
starting may become difficult.


Do not use an automotive cigarette lighter
or other accessories with a plug that gets
hot because the jack can be damaged.
_
EE.book Page 45 Monday, June 18, 2001 10:18 AM

5-1
EBU00113
1-PRE-OPERATION CHECKS
Before using this machine, check the following points:
ITEM ROUTINE PAGE
Front brakeCheck operation, free play, fluid level and fluid leakage.
Fill with DOT 4 brake fluid if necessary.5-5 ~ 5-7,
8-55 ~ 8-73
Rear brakeCheck operation, pedal height and free play.
FuelCheck fuel level.
Fill with fuel if necessary.5-9 ~ 5-11
Engine oil/
Transfer gear oilCheck oil level.
Fill with oil if necessary.5-13 ~ 5-15,
8-13 ~ 8-25
Final gear oil/
Differential gear oilCheck for leakage. 5-17, 8-27 ~ 8-35
ThrottleCheck for proper throttle cable operation. 5-17, 8-55
Wheels and tiresCheck tire pressure, wear and damage.5-21 ~ 5-27,
8-79 ~ 8-83
Fittings and FastenersCheck all fittings and fasteners. 5-19
LightsCheck for proper operation. 5-19, 8-91 ~ 8-95
Axle bootsCheck operation. 8-35
EE.book Page 1 Monday, June 18, 2001 10:18 AM

5-11 1. Fuel level 2. Filler tube
1. Niveau de carburant 2. Tube de remplissage
1. Nivel de combustible 2. Tubo del relleno
CAUTION:_ Use only unleaded gasoline. The use of leaded
gasoline will cause severe damage to the en-
gine internal parts such as valves, piston
rings, exhaust system, etc. _
WARNING
_

Do not overfill the fuel tank. Fuel expands
when it heats up. If the fuel tank is over-
filled, fuel could spill out due to heat from
the engine or the sun.


Be careful not to spill fuel, especially on
the engine or exhaust pipe which can
cause a fire and severe injury. Wipe up any
spilled fuel immediately.


Do not refuel right after the engine has
been running and is still very hot.


Be sure the fuel tank cap is closed secure-
ly.
_
EE.book Page 11 Monday, June 18, 2001 10:18 AM

5-13
EBU00492*
Engine oil/Transfer gear oil
Make sure the engine oil/transfer gear oil is at the
specified level. Add oil as necessary. (See pages
8-13 ~ 8-25.)
Recommended oil:
Recommended engine oil classification:
API Service SE, SF, SG type or higher
-20˚ -10˚ 0˚
10˚20˚ 30˚40˚50˚C
10W/30
15W/4020W/4020W/50
10W/40
5W/30
EE.book Page 13 Monday, June 18, 2001 10:18 AM

5-14
FBU00492*
Huile de moteur/huile de boîte intermédiaire
S’assurer que l’huile de moteur et l’huile de boîte inter-
médiaire sont au niveau spécifié. Ajouter de l’huile si né-
cessaire. (Voir pages 8-14 à 8-26.)
Huile recommandée:
Classification d’huile de moteur recommandée:
Huiles de type API Service, de classe SE, SF,
SG min.
-20˚ -10˚ 0˚
10˚20˚ 30˚40˚50˚C
10W/30
15W/4020W/4020W/50
10W/40
5W/30
SBU00492*
Aceite del motor/Aceite de la caja transfer
Asegúrese de que el aceite del motor/caja transfer se
encuentra al nivel especificado. Añada aceite según
se requiera. (Ver página 8-14 ~ 8-26.)
Recommended oil:
Recommended engine oil classification:
API Service SE, SF, SG type or higher
-20˚-10˚0˚
10˚20˚30˚40˚50˚C
10W/30
15W/4020W/4020W/50
10W/40
5W/30
EE.book Page 14 Monday, June 18, 2001 10:18 AM

5-15
CAUTION:
Be sure to use motor oils that do not contain
anti-friction modifiers. Passenger car motor
oils (often labeled “Energy Conserving II”)
contain anti-friction additives which will cause
clutch and/or starter clutch slippage, resulting
in reduced component life and poor engine
performance.Oil quantity:
Periodic oil change
(engine oil):
2.4 L
Periodic oil change
(engine oil and transfer gear oil with oil
filter replacement):
2.8 L
Total amount:
3.7 L
EE.book Page 15 Monday, June 18, 2001 10:18 AM