engine YAMAHA WOLVERINE 400 2004 User Guide

4-19 1. Locknut 2. Adjusting screw a. 12 mm
1. Contre-écrou 2. Vis de réglage
1. Contratuerca 2. Tornillo de ajuste
EBU01198
Speed limiter
The speed limiter keeps the throttle from fully
opening, even when the throttle lever is pushed to
the maximum. Turning in the adjusting screw limits
the maximum engine power available and de-
creases the maximum speed of the ATV.
WARNING
_ Improper adjustment of the speed limiter and
throttle could cause throttle cable damage or
improper throttle operation. You could lose
control, have an accident or be injured. Do not
turn the adjusting screw out more than 12 mm
or the throttle cable could be damaged. Always
make sure the throttle lever free play is adjust-
ed to 3–5 mm. See page 8-85. _
U5TE61.book Page 19 Tuesday, May 6, 2003 4:40 PM

4-25 1. Lock plate
1. Verrou
1. Placa de bloqueo
EBU00075
Parking brake
Use the parking brake when you have to start the
engine or park the machine, especially on a slope.
Apply the rear brake lever and push down the lock
plate to apply the parking brake. Squeeze the rear
brake lever to release the parking brake.
WARNING
_

Always set the parking brake before start-
ing the engine. The ATV could start mov-
ing unexpectedly if the parking brake is not
applied. This could cause loss of control or
a collision.


Always be sure you have released the
parking brake before you begin to ride. The
brake could overheat if you ride the ATV
without releasing the parking brake. You
could lose braking performance which
could cause an accident. You could also
wear out the brakes prematurely.
_
U5TE61.book Page 25 Tuesday, May 6, 2003 4:40 PM

4-29 1. Recoil starter
1. Lanceur à réenroulement
1. Arranque por tracción de cable
1. Fuel tank cap
1. Bouchon du réservoir de carburant
1. Tapón del depósito de combustible
EBU01264
Recoil starter
Firmly grasp the handle and pull slightly until en-
gagement can be felt. Then pull forcefully, being
careful not to pull the rope all the way out.
WARNING
_ Shift the drive select lever into the neutral po-
sition and apply the parking brake before start-
ing the engine or the ATV could start to move
unexpectedly, which could cause an accident. _
EBU00092
Fuel tank cap
Remove the fuel tank cap by turning it counter-
clockwise.
U5TE61.book Page 29 Tuesday, May 6, 2003 4:40 PM

4-31 1. Arrow mark pointing to “OFF”
1. Flèche dirigée vers “OFF”
1. Marca de la flecha señalando a “OFF”
OFF position
Robinet fermé
Posición OFF1. Arrow mark pointing to “ON”
1. Flèche dirigée vers “ON”
1. Marca de la flecha señalando a “ON”ON position
Robinet ouvert
Posición ON
EBU00093
Fuel cock
The fuel cock supplies fuel from the fuel tank to the
carburetor.
The fuel cock has three positions.
OFF: With the lever in this position, fuel will not
flow. Always turn the lever to this position
when the engine is not running.
ON: With the lever in this position, fuel flows to
the carburetor. Normal riding is done with
the lever in this position.
U5TE61.book Page 31 Tuesday, May 6, 2003 4:40 PM

4-33 1. Arrow mark pointing to “RES”
1. Flèche dirigée vers “RES”
1. Marca de la flecha señalando a “RES”
RES position
Réserve
Posición RES1. Starter (choke) “”
1. Starter (enrichisseur) “”
1. Starter (choke) “”
RES: This indicates reserve. If you run out of fuel
while riding, turn the lever to this position.
THEN FILL THE FUEL TANK AT THE
FIRST OPPORTUNITY. After refuelling, re-
turn the fuel cock lever to the “ON” position.
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 pages 6-3–6-7.)
U5TE61.book Page 33 Tuesday, May 6, 2003 4:40 PM

4-45 1. Auxiliary DC jack cap
1. Capuchon de la prise pour accessoires
1. Tapa de la toma de CC auxiliar
1. Auxiliary DC jack
1. Prise pour accessoires
1. Toma de CC auxiliar
EBU10020
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 should only be used when the engine is
running.
1. Set the light switch to “OFF”.
2. Start the engine. (See pages 6-3–6-7.)
3. Open the auxiliary DC jack cap, and then in-
sert 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)
U5TE61.book Page 45 Tuesday, May 6, 2003 4:40 PM

4-47
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 headlights 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.
_
U5TE61.book Page 47 Tuesday, May 6, 2003 4:40 PM

5-1
EBU00113
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,
8-87–8-95
Rear brakeCheck operation, condition and free play.
Adjust if necessary.5-5–5-7,
8-87, 8-97–8-101
FuelCheck fuel level.
Fill with fuel if necessary.5-9–5-11
Engine oilCheck oil level.
Fill with oil if necessary.5-13, 8-29–8-39
Coolant reservoirCheck coolant level in reservoir.
Fill with coolant if necessary.8-51–8-61
Final gear oil and
differential gear oilCheck for leakage.5-15–5-17,
8-39–8-49
ThrottleCheck for proper throttle cable operation. 5-19, 8-85
Wheels and tiresCheck tire pressure, wear and damage.5-23–5-29,
8-109–8-111
Fittings and fastenersCheck all fittings and fasteners. 5-21
Lights and switchesCheck for proper operation. 5-21, 8-123–8-127
Axle bootsCheck for damage. 8-61
U5TE61.book Page 1 Tuesday, May 6, 2003 4:40 PM

5-11
CAUTION:_ Use only unleaded gasoline. The use of leaded
gasoline will cause severe damage to internal
engine parts, such as the valves and piston
rings, as well as to the exhaust system. _
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.
_
U5TE61.book Page 11 Tuesday, May 6, 2003 4:40 PM

5-13
EBU10842
Engine oil
Make sure the engine oil is at the specified level.
Add oil as necessary. (See pages 8-29–8-39.)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 engine oil type and quantity:
See page 10-2.
U5TE61.book Page 13 Tuesday, May 6, 2003 4:40 PM