2007 YAMAHA WOLVERINE 450 light

8-6
8
26 Final gear oilChange.
Check ATV for oil leakage, and correct if neces-
sary.√√
27 Cooling systemCheck coolant level and ATV for coolant leakage,
and correct if necessary.√√√√√
Replace coolant. Every 2 years
28*Moving parts and
cablesLubricate.√√√√
29*Drive select lever
safety system cableCheck operation and adjust or replace if neces-
sary.√√√
30*Throttle lever hous-
ing and cableCheck operation and correct if necessary.
Check throttle cable free play and adjust if neces-
sary.
Lubricate throttle lever housing and cable.√√√√√
31*Exhaust systemCheck for leakage and replace gasket(s) if neces-
sary.
Check for looseness and tighten all screw clamps
and joints if necessary.√√√
32 Spark arresterClean.√√√
33*Front and rear brake
switchesCheck operation and correct if necessary.√√√√√
34*Lights and switchesCheck operation and correct if necessary.
Adjust headlight beams.√√√√√ NO. ITEMCHECK OR MAINTENANCE
JOBINITIAL EVERY
Whichev-
er comes
firstmonth136612
km
(mi)320
(200)1200
(750)2400
(1500)2400
(1500)4800
(3000)
hours 20 75 150 150 300U3C261E0.book Page 6 Thursday, June 29, 2006 4:15 PM

8-15
8 2. Remove the spark plug as shown, with the
spark plug wrench included in the owner’s tool
kit.
To check the spark plug
1. Check that the porcelain insulator around the
center electrode of the spark plug is a medi-
um-to-light tan (the ideal color when the ATV
is ridden normally).
NOTE:If the spark plug shows a distinctly different color,
the engine could be operating improperly. Do not
attempt to diagnose such problems yourself. In-stead, have a Yamaha dealer check the ATV.2. Check the spark plug for electrode erosion
and excessive carbon or other deposits, and
replace it if necessary.
To install the spark plug
1. Measure the spark plug gap with a wire thick-
ness gauge and, if necessary, adjust the gap
to specification.1. Spark plug wrench
Specified spark plug:
NGK/DR8EA
Spark plug gap:
0.6–0.7 mm (0.024–0.028 in)
U3C261E0.book Page 15 Thursday, June 29, 2006 4:15 PM

8-33
8 3. Tap the tailpipe lightly, and then use a wire
brush to remove any carbon deposits from the
spark arrester portion of the tailpipe and inside
of the tailpipe housing.4. Insert the tailpipe into the muffler and align the
bolt holes.
5. Install the tailpipe cover by installing the bolts.
WARNING
EWB02340Do not start the engine when cleaning the
spark arrester, otherwise it could cause injury
to the eyes, burns, carbon monoxide poison-
ing, possibly leading to death, and start a fire.
Always let the exhaust system cool prior totouching exhaust components.
1. Bolt
2. Tailpipe cover
1. Tailpipe
2. Spark arrester
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8-43
8
EBU24751Brake light switches The operation of the brake light switches must be
checked and, if necessary, adjusted at the inter-
vals specified in the periodic maintenance and lu-
brication chart.
The brake light switch for the brake pedal can be
adjusted as follows, but the other brake light
switches should be adjusted by a Yamaha dealer.
1. Remove panel A. (See page 8-8.)NOTE:The brake light switch is properly adjusted when
the brake light comes on just before braking takeseffect.
2. Turn the adjusting nut while holding the brake
light switch in place. To make the brake light
come on earlier, turn the adjusting nut in direc-
tion (a). To make the brake light come on lat-
er, turn the adjusting nut in direction (b).3. Install the panel.
EBU24900Checking and lubricating the cables The operation and the condition of all control ca-
bles should be checked before each ride, and the
cables and cable ends should be lubricated if nec-
essary. If a cable is damaged or does not move
smoothly, have a Yamaha dealer check or replace
it.1. Brake light switch
2. Brake light switch adjusting nutRecommended lubricant:
Engine oil
U3C261E0.book Page 43 Thursday, June 29, 2006 4:15 PM

8-48
8
The main fuse and the fuse box are located under
the seat. (See page 4-12.)
If a fuse is blown, replace it as follows.
1. Turn the key to “OFF” and turn off all electrical
circuits.
CAUTION:ECB00640To prevent accidental short-circuiting, turn off
the main switch when checking or replacing afuse.
2. Remove the blown fuse, and then install a
new fuse of the specified amperage.
1. Headlight fuse
2. Ignition fuse
3. Auxiliary DC jack fuse (for optional auxiliary DC jack)
4. Four-wheel-drive motor fuse
5. Signaling system fuse
6. Backup fuse (for odometer and tripmeter)
7. Spare fuse
Specified fuses:
Main fuse:
30.0 A
Headlight fuse:
15.0 A
Ignition fuse:
10.0 A
Four-wheel-drive motor fuse:
3.0 A
Signaling system fuse:
10.0 A
Auxiliary DC jack fuse:
10.0 A
Backup fuse:
10.0 A
U3C261E0.book Page 48 Thursday, June 29, 2006 4:15 PM

8-49
8
WARNING
EWB02171Always use a fuse of the specified rating, and
never use a substitute object in place of the
proper fuse. An improper fuse or a substitute
object can cause damage to the electrical sys-tem, which could lead to a fire.
3. Turn the key to “ON” and turn on the electrical
circuits to check if the devices operate.
4. If the fuse immediately blows again, have a
Yamaha dealer check the electrical system.EBU25541Replacing a headlight bulb If a headlight bulb burns out, replace it as follows.
1. Remove the headlight bulb holder cover at the
rear of the headlight by pulling it off.2. Remove the headlight bulb holder by pushing
it inward and turning it counterclockwise.
1. Headlight bulb holder cover
1. Headlight bulb holder
U3C261E0.book Page 49 Thursday, June 29, 2006 4:15 PM

8-50
83. Remove the defective bulb from the headlight
unit by pulling it out.
WARNING
EWB02220A headlight bulb is hot when it is on and imme-
diately after it is turned off. Wait for the bulb to
cool before touching or removing it. You can
be burned or a fire could start if the bulb touch-es something flammable.
4. Install a new headlight bulb into the headlight
unit by aligning the projection on the bulb with
the groove in the headlight unit.
CAUTION:ECB00650Do not touch the glass part of the headlight
bulb to keep it free from oil, otherwise the
transparency of the glass, the luminosity of the
bulb, and the bulb life will be adversely affect-
ed. Thoroughly clean off any dirt and finger-
prints on the headlight bulb using a clothmoistened with alcohol or thinner.
5. Install the headlight bulb holder by aligning the
projections with the holes in the headlight unit,
pushing it inward, and turning it clockwise until
it stops.
6. Install the headlight bulb holder cover at the
rear of the headlight.
1. Do not touch the glass part of the bulb.U3C261E0.book Page 50 Thursday, June 29, 2006 4:15 PM

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8
CAUTION:ECB00670Make sure the headlight bulb holder cover is
securely fitted over the bulb holder and seatedproperly.
7. Adjust the headlight beam if necessary.EBU25560Adjusting a headlight beam CAUTION:ECB00690It is advisable to have a Yamaha dealer makethis adjustment.
To raise a headlight beam, turn the adjusting bolt
in direction (a).
To lower a headlight beam, turn the adjusting bolt
in direction (b).
EBU25600Replacing the tail/brake light bulb If the tail/brake light bulb burns out, replace it as
follows.
1. Remove the lens by removing the screws.1. Headlight beam adjusting bolt
U3C261E0.book Page 51 Thursday, June 29, 2006 4:15 PM