2004 YAMAHA WOLVERINE 450 engine

4-7
CAUTION:_

The engine may overheat if the ATV is
overloaded. If this happens, reduce the
load to specification.


After restarting, make sure that the light is
out. Continuous use while the light is on
may cause damage to the engine.
_
U5ND61.book Page 7 Thursday, June 5, 2003 7:02 PM

4-17 1. Light switch “//OFF”
2. Start switch “”
3. Engine stop switch “/”
4. Override switch “OVERRIDE”
5. Horn switch “”
1. Contacteur d’éclairage “//OFF”
2. Contacteur du démarreur “”
3. Coupe-circuit du moteur “/”
4. Contacteur de désactivation “OVERRIDE”
5. Contacteur de l’avertisseur “”
1. Interruptor de luces “//OFF”
2. Interruptor de arranque “”
3. Interruptor de paro del motor “/”
4. Interruptor de cancelación “OVERRIDE”
5. Interruptor de la bocina “”
EBU00053
Handlebar switches
EBU12040
Light switch “/ /OFF”
Set the switch to “” to turn on the low beam and
the taillight.
Set the switch to “” to turn on the high beam
and the taillight.
Set the switch to “OFF” to turn off all the lights.CAUTION:_ Do not use the headlights with the engine
turned off for more than thirty minutes. The
battery may discharge to the point that the
starter motor will not operate properly. If this
should happen, remove the battery and re-
charge it. _
EBU12050
Engine stop switch “/”
Make sure that the engine stop switch is set to
“” before starting the engine. The engine stop
switch controls ignition and can be used at all
times to stop the engine, especially in an emer-
gency. The engine will not start or run when the
engine stop switch is set to “”.
U5ND61.book Page 17 Thursday, June 5, 2003 7:02 PM

4-19 1. Light switch “//OFF”
2. Start switch “”
3. Engine stop switch “/”
4. Override switch “OVERRIDE”
5. Horn switch “”
1. Contacteur d’éclairage “//OFF”
2. Contacteur du démarreur “”
3. Coupe-circuit du moteur “/”
4. Contacteur de désactivation “OVERRIDE”
5. Contacteur de l’avertisseur “”
1. Interruptor de luces “//OFF”
2. Interruptor de arranque “”
3. Interruptor de paro del motor “/”
4. Interruptor de cancelación “OVERRIDE”
5. Interruptor de la bocina “”
EBU00607
Start switch “”
The starter motor cranks the engine when this
switch is pushed.CAUTION:
See starting instructions prior to starting the
engine. (See page 6-3 for details.)
EBU00059
Horn switch “”
Press the switch to sound the horn.
U5ND61.book Page 19 Thursday, June 5, 2003 7:02 PM

4-21 1. Override switch “OVERRIDE”
1. Contacteur de désactivation “OVERRIDE”
1. Interruptor de cancelación “OVERRIDE”
EBU13811
Override switch “OVERRIDE”
Top speed is normally limited when operating in
4WD-LOCK. If conditions require more engine
power when riding forward, push and hold this
switch to override the 4WD-LOCK speed limiting
function. (See page 4-31 for a detailed explanation
about the differential gear lock switch and its func-
tion.) Releasing the switch restores the speed lim-
iting function.
While this switch is pushed, the segments of the
speedometer digits will appear as shown in the fig-
ure.NOTE:_ If the digits of the speedometer appear as shown
when the switch is NOT being pushed, this could
indicate a malfunction in the electrical system. In
this case, take the ATV to a Yamaha dealer at the
first opportunity. _
U5ND61.book Page 21 Thursday, June 5, 2003 7:02 PM

4-33
NOTE:_

When the switch is set to “LOCK”, the differ-
ential gear lock indicator light will flash until
the differential gear is locked.


When the indicator light is flashing, turning
the handlebar back and forth will help the dif-
ferential gear lock to engage.


Riding before the differential gear lock is
properly engaged (e.g., when the indicator
light is flashing) will cause the engine speed
to be limited until engagement is complete.


When the ATV is in 4WD-LOCK, the maxi-
mum traveling speed is limited to 35 km/h.
However, if conditions require full engine
power to be available, push and hold the
override switch to disable the “DIFF.LOCK”
speed limiter. (See page 4-21 for a detailed
explanation of this switch.)
_
U5ND61.book Page 33 Thursday, June 5, 2003 7:02 PM

4-35 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.
U5ND61.book Page 35 Thursday, June 5, 2003 7:02 PM

4-37 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 8-87. _
U5ND61.book Page 37 Thursday, June 5, 2003 7:02 PM

4-43 1. Drive select lever
1. Levier de présélection
1. Palanca de selección de marcha
1. Recoil starter
1. Lanceur à réenroulement
1. Arranque por tracción de cable
EBU00608
Drive select lever
The drive select lever is used to shift your machine
into the low, high, neutral, reverse and park posi-
tions. (Refer to pages 6-11–6-15 for the drive se-
lect lever operation.)
EBU00975
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
_ Always shift the drive select lever to “P” park
position before starting the engine, otherwise
the ATV could start to move unexpectedly,
which could cause an accident. _
U5ND61.book Page 43 Thursday, June 5, 2003 7:02 PM