warning YAMAHA WOLVERINE 400 2004 User Guide

4-15 1. Four-wheel drive switch “2WD/4WD”
1. Contacteur de commande du mode de traction “2WD”/“4WD”
1. Interruptor de modo de tracción “2WD/4WD”
EBU00061
On command four-wheel drive switch
“2WD/4WD”
To change from two-wheel drive (2WD) to four-
wheel drive (4WD), stop the ATV and set the
switch to the 4WD position.
To change from four-wheel drive (4WD) to two-
wheel drive (2WD), stop the ATV and set the
switch to the 2WD position.
WARNING
_ Always stop the ATV before changing from
2WD to 4WD or from 4WD to 2WD. The ATV
handles differently in 2WD than in 4WD in
some circumstances. Changing from 2WD to
4WD or vice-versa while moving may cause
the ATV to unexpectedly handle differently.
This could distract the operator and increase
the risk of losing control and an accident. _
U5TE61.book Page 15 Tuesday, May 6, 2003 4:40 PM

4-17 1. Throttle lever
1. Levier d’accélération
1. Palanca de aceleración
EBU00063
Throttle lever
Once the engine is running, movement of the
throttle lever will increase the engine speed.
Regulate the speed of the machine by varying the
throttle position. Because the throttle is spring-
loaded, the machine will decelerate, and the en-
gine will return to an idle any time the hand is re-
moved from the throttle lever.
Before starting the engine, check the throttle to be
sure it is operating smoothly. Make sure it returns
to the idle position as soon as the lever is released.
WARNING
Malfunction of the throttle could make it diffi-
cult to speed up or slow down when you need
to. This could cause an accident. Check the
operation of the throttle lever before you start
the engine. If the throttle does not work
smoothly, check for the cause. Correct the
problem before riding the ATV or consult a
Yamaha dealer.
U5TE61.book Page 17 Tuesday, May 6, 2003 4:40 PM

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. _
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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

4-41 1. Spring preload adjusting ring
2. Position indicator
1. Anneau de réglage de la précontrainte de ressort
2. Indicateur de position
1. Anillo de ajuste de la precarga del resorte
2. Indicador de posición
1. Special wrench
1. Clé spéciale
1. Llave especial
EBU01163
Front shock absorber adjustment
The spring preload can be adjusted to suit the rid-
er’s weight and riding conditions.
Adjust the spring preload as follows.
To increase the spring preload, turn the adjusting
ring in direction
a.
To decrease the spring preload, turn the adjusting
ring in direction
b.NOTE:_ A special wrench can be obtained at a Yamaha
dealer to make this adjustment. _
WARNING
_ Always adjust the shock absorbers on the left
and right side to the same setting. Uneven ad-
justment can cause poor handling and loss of
stability, which could lead to an accident. _
Standard position: 2
1 - Minimum (soft)
5 - Maximum (hard)
U5TE61.book Page 41 Tuesday, May 6, 2003 4:40 PM

5-4
WARNING
Always inspect your ATV each time you use it to make sure the ATV is in safe operating condition.
Always follow the inspection and maintenance procedures and schedules described in the Own-
er’s Manual. Failure to inspect increases the possibility of an accident or equipment damage.
AVERTISSEMENT
_ Toujours effectuer ces contrôles avant chaque départ afin de s’assurer que le VTT peut être utilisé en toute sécu-
rité. Toujours respecter les procédés et intervalles de contrôle et d’entretien repris dans ce manuel. Omettre ces
contrôles accroît les risques d’accident ou d’endommagement du véhicule. _
ADVERTENCIA
_ Inspeccionar siempre el ATV cada vez que vaya a utilizarse, para asegurarse de que está en condicio-
nes de funcionar sin peligro. Seguir siempre los procedimientos y programas de inspección y mante-
nimiento descritos en el Manual del Propietario. Si no se inspecciona la máquina, aumenta el riesgo de
accidente o avería. _U5TE61.book Page 4 Tuesday, May 6, 2003 4:40 PM

5-7
Brake fluid leakage (front brake)
Check to see if any brake fluid is leaking out of the
hose, joint or brake fluid reservoir of the front
brake. Apply the brake firmly for one minute. If the
lever moves slowly inward, there may be a leak in
the brake system. If there is any leakage, the
brake system should be inspected by a Yamaha
dealer.
Brake operation
Test the brakes at slow speed after starting out to
make sure they are working properly. If the brakes
do not provide proper braking performance, in-
spect the brake pads and shoes for wear. (See
page 8-87.)
WARNING
_ Always check the brakes at the start of every
ride. Do not ride the ATV if you find any prob-
lem with the brakes or you could lose braking
ability, which could lead to an accident. If a
problem cannot be corrected by the adjust-
ment procedures provided in this manual,
have a Yamaha dealer check for the cause. _
U5TE61.book Page 7 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

5-19
CAUTION:_ Hard water or salt water is harmful to the en-
gine. You may use soft water if you cannot get
distilled water. _
WARNING
_ Wait for the engine and radiator to cool before
removing the radiator cap. You could be
burned by hot fluid and steam blown out under
pressure. Always put a thick rag over the cap
when opening. Allow any remaining pressure
to escape before completely removing the cap. _
EBU01083
Throttle lever
Check to see that the throttle lever operates cor-
rectly. It must open smoothly and spring back to
the idle position when released. Have a Yamaha
dealer repair as necessary for proper operation.Coolant reservoir capacity
(up to the maximum level mark):
0.25 L
U5TE61.book Page 19 Tuesday, May 6, 2003 4:40 PM