Page 144 of 166
8-59
82. Remove the headlight bulb cover.
3. Disconnect the headlight coupler.4. Unhook the headlight bulb holder, and then
remove the defective bulb.
1. Cover at the rear of the headlight
1. Headlight bulb cover
1. Headlight coupler
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8-60
8
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.
5. Place a new headlight bulb into position, and
then secure it with the bulb holder.
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.
6. Connect the headlight coupler.
7. Install the headlight bulb cover.
8. Install the cover at the rear of the headlight.
1. Headlight bulb holder
2. Headlight bulb
1. Do not touch the glass part of the bulb.
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8-61
8
CAUTION:ECB00670Make sure the headlight bulb holder cover is
securely fitted over the bulb holder and seatedproperly.
9. Adjust the headlight beam if necessary.EBU25550Adjusting a headlight beam CAUTION:ECB00690It is advisable to have a Yamaha dealer makethis adjustment.
To raise a headlight beam, turn the adjusting
screw in direction (a).
To lower a headlight beam, turn the adjusting
screw in direction (b).
EBU25640Replacing the tail/brake light bulb If the tail/brake light bulb burns out, replace it as
follows.
1. Remove panel I. (See page 8-8.)
2. Remove the bulb holder (together with the
bulb) by turning it counterclockwise.1. Headlight beam adjusting screw
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Page 147 of 166
8-62
8 3. Remove the defective bulb by pushing it in
and turning it counterclockwise.4. Insert a new bulb into the bulb holder, push it
in, and then turn it clockwise until it stops.
5. Install the bulb holder (together with the bulb)
by turning it clockwise.
6. Install the panel.
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.
4. Remove the wheel.
1. Tail/brake light bulb holder
1. Tail/brake light bulb
1. Wheel nut
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Page 149 of 166

8-64
8
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.U3B460E0.book Page 64 Friday, May 12, 2006 2:51 PM
Page 158 of 166
10-4
10
Rear:
33.0 kPa (4.8 psi) (0.330 kgf/cm²)
Front wheel:Wheel type:
Panel wheel
Rim size:
12 x 6.0ATRear wheel:Wheel type:
Panel wheel
Rim size:
12 x 7.5ATFront brake:Type:
Dual disc brake
Operation:
Right hand operation
Recommended fluid:
DOT 4Rear brake:Type:
Dual disc brake
Operation:
Left hand and right foot operation
Recommended fluid:
DOT 4Front suspension:Type:
Double wishbone
Spring/shock absorber type:
Coil spring/oil damperWheel travel:
180 mm (7.1 in)
Rear suspension:Type:
Double wishbone
Spring/shock absorber type:
Coil spring/oil damper
Wheel travel:
230 mm (9.1 in)Electrical system:Ignition system:
Transistorized coil ignition (digital)
Charging system:
AC magnetoBattery:Model:
YTX20L-BS
Voltage, capacity:
12 V, 18.0 AhHeadlight:Bulb type:
Halogen bulbBulb voltage, wattage x quantity:Headlight:
12 V, 35.0/35.0 W × 2
Tail/brake light:
12 V, 5.0/21.0 W
Meter lighting:
EL
Neutral indicator light:
LED
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10-5
10
Reverse indicator light:
LED
Coolant temperature warning light:
LED
Engine trouble warning light:
LED
EPS warning light:
LED
Park indicator light:
LED
On-Command four-wheel-drive/differential gear lock
indicator:
LCD
High-range indicator light:
LED
Low-range indicator light:
LED
Differential gear lock indicator light:
LEDFuses:Main fuse:
40.0 A
Fuel injection system fuse:
15.0 A
EPS fuse:
40.0 A
Headlight fuse:
15.0 A
Signaling system fuse:
5.0 A
Ignition fuse:
10.0 AAuxiliary DC jack fuse:
15.0 A
Four-wheel-drive motor fuse:
10.0 A
Radiator fan fuse:
15.0 A
U3B460E0.book Page 5 Friday, May 12, 2006 2:51 PM
Page 163 of 166

INDEX
AAccessories and loading ................................................ 6-6
Accessories, auxiliary jack ........................................... 4-22
Air filter element, cleaning ............................................ 8-36
Axle boots .................................................................... 8-51BBattery .......................................................................... 8-55
Brake fluid, changing ................................................... 8-47
Brake fluid level, checking ........................................... 8-46
Brake hose protectors, checking the rear .................... 8-45
Brake lever, front .......................................................... 4-14
Brake levers, checking and lubricating ........................ 8-52
Brake pads, checking the front and rear ...................... 8-44
Brake pedal and rear brake lever ................................. 4-14
Brake pedal, checking and lubricating ......................... 8-53
Brake pedal free play and brake pedal position,
adjusting and checking .............................................. 8-49
Brakes, front and rear .................................................... 5-4CCables, checking and lubricating ................................. 8-51
Carrier, front ................................................................. 4-21
Carrier, rear .................................................................. 4-21
Chassis fasteners .......................................................... 5-7
Cleaning ......................................................................... 9-1
Coolant .................................................................. 5-3, 8-30
Coolant temperature warning light ................................. 4-2DDifferential gear lock indicator light ................................ 4-4Differential gear oil ................................................ 5-3, 8-28
Drive select lever ......................................................... 4-15
Drive select lever and driving in reverse ........................ 6-2
Drive select lever safety system cable, adjusting ........ 8-44
Drive shaft universal joint, lubricating .......................... 8-53
EEngine break-in .............................................................. 6-4
Engine idling speed ..................................................... 8-42
Engine oil ....................................................................... 5-3
Engine oil and oil filter cartridge ................................... 8-22
Engine stop switch ......................................................... 4-7
Engine trouble warning light .......................................... 4-3
EPS warning light .......................................................... 4-3FFinal gear oil ......................................................... 5-3, 8-26
Four-wheel-drive/differential gear lock indicator ............ 4-3
Front and rear brake lever free play, checking ............ 8-48
Fuel ....................................................................... 4-16, 5-3
Fuel tank cap ............................................................... 4-15
Fuses, replacing .......................................................... 8-56HHandlebar switches ....................................................... 4-7
Headlight beam, adjusting ........................................... 8-61
Headlight bulb, replacing ............................................. 8-58
High-range indicator light ............................................... 4-4
Horn switch .................................................................... 4-8IIdentification numbers .................................................. 11-1
U3B460E0.book Page 1 Friday, May 12, 2006 2:51 PM