light YAMAHA WOLVERINE 450 2008 Owner's Manual

8-44
8

Make sure the brakes are not spongy. All air
must be bled from the brake system.
Replacement of brake components requires
professional knowledge. These proceduresshould be performed by a Yamaha dealer.EBU24230Axle boots The axle boots must be checked for damage at the
intervals specified in the periodic maintenance and
lubrication chart. Check the axle boots for tears or
damage. If any damage is found, have them re-
placed by a Yamaha dealer.
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 8-9.)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).
1. Axle boot (each side)U3C262E0.book Page 44 Tuesday, June 26, 2007 3:36 PM

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83. 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.
WARNING
EWB02130Inspect cables frequently and replace if dam-
aged. Corrosion can result when the cable
sheaths become damaged, and cables can
also become frayed or kinked, which could re-
strict the operation of controls and lead to anaccident or injury.EBU28710Checking and lubricating the front and
rear brake levers The operation of the front and rear brake levers
should be checked before each ride, and the lever
pivots should be lubricated if necessary.
1. Brake light switch
2. Brake light switch adjusting nutRecommended lubricant:
Engine oil
Recommended lubricants:
Front brake lever:
Silicone grease
Rear brake lever:
Lithium-soap-based grease (all-purpose
grease)
U3C262E0.book Page 45 Tuesday, June 26, 2007 3:36 PM

8-49
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
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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
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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.U3C262E0.book Page 51 Tuesday, June 26, 2007 3:36 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
U3C262E0.book Page 52 Tuesday, June 26, 2007 3:36 PM

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82. Remove the defective bulb by pushing it in
and turning it counterclockwise.3. Insert a new bulb into the socket, push it in,
and then turn it clockwise until it stops.
4. Install the lens by installing the screws.
CAUTION:ECB00700Do not overtighten the screws, otherwise thelens may break.EBU25650Removing a wheel 1. Loosen the wheel nuts.
2. Elevate the ATV and place a suitable stand
under the frame.
3. Remove the nuts from the wheel.
1. Screw
1. Tail/brake light bulb
1. Wheel nut
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EBU25740Troubleshooting Although Yamaha ATVs receive a thorough in-
spection before shipment from the factory, trouble
may occur during operation. Any problem in the fu-
el, compression, or ignition systems, for example,
can cause poor starting and loss of power.
The following troubleshooting charts represent
quick and easy procedures for checking these vital
systems yourself. However, should your ATV re-
quire any repair, take it to a Yamaha dealer, whose
skilled technicians have the necessary tools, expe-
rience, and know-how to service the ATV properly.
Use only genuine Yamaha replacement parts. Im-
itation parts may look like Yamaha parts, but they
are often inferior, have a shorter service life and
can lead to expensive repair bills.
WARNING
EWB02280Do not smoke when checking the fuel system.
Fuel can ignite or explode, causing severe inju-
ry or property damage. Make sure there are no
open flames or sparks in the area, including pi-lot lights from water heaters or furnaces.U3C262E0.book Page 55 Tuesday, June 26, 2007 3:36 PM

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Front suspension:Type:
Double wishbone
Spring/shock absorber type:
Coil spring/oil damper
Wheel travel:
160 mm (6.3 in)Rear suspension:Type:
Swingarm
Spring/shock absorber type:
Coil spring/oil damper
Wheel travel:
180 mm (7.1 in)Electrical system:Ignition system:
DC. CDI
Charging system:
AC magnetoBattery:Model:
YTX20L-BS
Voltage, capacity:
12 V, 18.0 AhHeadlight:Bulb type:
Krypton bulbBulb voltage, wattage x quantity:Headlight:
12 V, 30.0/30.0 W × 2Tail/brake light:
12 V, 5.0/21.0 W × 1
Neutral indicator light:
LED
Reverse indicator light:
LED
Coolant temperature warning light:
LED
Park indicator light:
LED
On-Command four-wheel-drive indicator:
LCD
Fuses:Main fuse:
30.0 A
Headlight fuse:
15.0 A
Signaling system fuse:
10.0 A
Ignition fuse:
10.0 A
Auxiliary DC jack fuse:
10.0 A
Backup fuse:
10.0 A
Four-wheel-drive motor fuse:
3.0 A
U3C262E0.book Page 4 Tuesday, June 26, 2007 3:36 PM

INDEX
AAccessories and loading ................................................ 6-6
Air filter element, cleaning ............................................ 8-31
Axle boots .................................................................... 8-44BBattery .......................................................................... 8-47
Brake fluid, changing .................................................... 8-41
Brake fluid level, checking ............................................ 8-39
Brake lever free play and brake pedal position (rear),
adjusting and checking .............................................. 8-42
Brake lever free play, checking the front ...................... 8-41
Brake lever, front ............................................................ 4-8
Brake levers, checking and lubricating ......................... 8-45
Brake light switches ..................................................... 8-44
Brake pads, checking the front and rear ...................... 8-38
Brake pedal and rear brake lever ................................... 4-8
Brake pedal, checking and lubricating ......................... 8-46
Brakes, front and rear .................................................... 5-4CCables, checking and lubricating ................................. 8-45
Carburetor, adjusting .................................................... 8-36
Chassis fasteners ........................................................... 5-7
Cleaning ......................................................................... 9-1
Coolant .................................................................. 5-3, 8-26
Coolant temperature warning light ................................. 4-2
Cowlings and panels, removing and installing ............... 8-9DDifferential gear oil ......................................................... 5-3Differential gear oil, changing ....................................... 8-24
Drive select lever ............................................................ 4-9
Drive select lever and driving in reverse ........................ 6-3
Drive select lever safety system cable, adjusting ......... 8-38
EEngine break-in .............................................................. 6-5
Engine, cold start ........................................................... 6-1
Engine idling speed ...................................................... 8-36
Engine oil ....................................................................... 5-3
Engine oil and oil filter cartridge ................................... 8-17
Engine, starting a warm ................................................. 6-3
Engine stop switch ......................................................... 4-4FFinal gear oil .......................................................... 5-3, 8-22
Four-wheel-drive indicator .............................................. 4-3
Fuel ......................................................................... 4-9, 5-3
Fuel cock ...................................................................... 4-10
Fuel tank cap .................................................................. 4-9
Fuses, replacing ........................................................... 8-48HHandlebar switches ........................................................ 4-4
Headlight beam, adjusting ............................................ 8-52
Headlight bulb, replacing .............................................. 8-50IIdentification numbers .................................................. 11-1
Indicator lights and warning light .................................... 4-2
Instruments, lights and switches .................................... 5-7
U3C262E0.book Page 1 Tuesday, June 26, 2007 3:36 PM