8-62
8
EBU25784Troubleshooting charts Starting problems or poor engine performance
Check the fuel level in
the fuel tank.1. Fuel
There is enough fuel.There is no fuel.
Check the compression.
Supply fuel.
The engine does not start.
Check the compression.
Operate the electric starter.2. Compression
There is compression.
There is no compression.
Check the ignition. Have a Yamaha dealer
check the ATV.
Remove the spark plug
and check the electrodes.3. Ignition
Wipe off with a dry cloth and correct the
spark plug gap, or replace the spark plug.
Have a Yamaha dealer check the ATV.
The engine does not start.
Have a Yamaha dealer
check the ATV.
The engine does not start.
Check the battery.
Operate the electric starter.4. Battery
The engine turns over
quickly.
The engine turns over
slowly.
The battery is good.Check the battery lead connections,
and have a Yamaha dealer charge
the battery if necessary.
DryWet
Open the throttle halfway and operate
the electric starter.
U1CT61E0.book Page 62 Wednesday, April 20, 2011 6:36 PM
9-3
9
ly, turn the wheels a little every month in order
to prevent the tires from becoming degraded
in one spot.
8. Cover the muffler outlet with a plastic bag to prevent moisture from entering it.
9. Remove the battery and fully charge it. Store it in a cool, dry place and charge it once a
month. Do not store the battery in an exces-
sively cold or warm place [less than 0 ° C (30
° F) or more than 30 ° C (90 °F)]. For more in-
formation on storing the battery, see page
8-51.
TIPMake any necessary repairs before storing the
ATV.U1CT61E0.book Page 3 Wednesday, April 20, 2011 6:36 PM
10-4
10
Front wheel:Wheel type:YFM450FAPB Panel wheel
YFM45FGPB (cast wheel model) Cast wheel
YFM45FGPB (panel wheel model) Panel wheel
YFM45FGPHB Panel wheel
Rim size:
12 x 6.0ATRear wheel:Wheel type:YFM450FAPB Panel wheel
YFM45FGPB (cast wheel model) Cast wheel
YFM45FGPB (panel wheel model) Panel wheel
YFM45FGPHB Panel wheel
Rim size:
12 x 7.5ATFront brake:Type:Disc brake
Operation:
Right hand operation
Specified brake fluid: DOT 4Rear brake:Type:
Wet multiple disc brake
Operation: Left hand and right foot operationFront suspension:Type:
Double wishbone Spring/shock absorber type:
Coil spring/oil damper
Wheel travel: 160 mm (6.3 in)
Rear suspension:Type:Double wishbone
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 × quantity:Headlight:
12 V, 30.0/30.0 W × 2
Tail/brake light: 12 V, 5.0/21.0 W × 1
Meter lighting:
EL (Electroluminescent)
U1CT61E0.book Page 4 Wednesday, April 20, 2011 6:36 PM
INDEX
AAccessories and loading ................................................ 6-6
Accessories, auxiliary jack ........................................... 4-23
Air filter element, cleaning ............................................ 8-30
Axle boots .................................................................... 8-46BBattery .......................................................................... 8-51
Brake fluid, changing ................................................... 8-41
Brake fluid level, checking ........................................... 8-40
Brake lever free play, checking the front ...................... 8-41
Brake lever, front .......................................................... 4-13
Brake levers, checking and lubricating ........................ 8-48
Brake light switches ..................................................... 8-47
Brake pads and friction plates, checking ..................... 8-39
Brake pedal and rear brake lever ................................. 4-13
Brake pedal, checking and lubricating ......................... 8-48
Brakes .......................................................................... 8-38
Brakes, front and rear .................................................... 5-3CCables, checking and lubricating ................................. 8-47
Carburetor, adjusting ................................................... 8-36
Carrier, front ................................................................. 4-22
Carrier, rear .................................................................. 4-22
Chassis fasteners .......................................................... 5-7
Cleaning ......................................................................... 9-1
Coolant .................................................................. 5-3, 8-26
Coolant temperature warning light ................................. 4-3
DDifferential gear oil ................................................ 5-3, 8-24
Drive select lever ......................................................... 4-14
Drive select lever and driving in reverse ........................ 6-3
Drive select lever safety system cable, adjusting ........ 8-38
Drive shaft universal joint, lubricating .......................... 8-49EEngine 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 ......................................................... 4-7
EPS warning light .......................................................... 4-3FFinal gear oil ......................................................... 5-3, 8-21
Four-wheel-drive/differential gear lock indicator ............ 4-4
Fuel ....................................................................... 4-15, 5-3
Fuel cock ..................................................................... 4-16
Fuel gauge ..................................................................... 4-6
Fuel tank cap ............................................................... 4-14
Fuses, replacing .......................................................... 8-54HHandlebar switches ....................................................... 4-6
Headlight beam, adjusting ........................................... 8-57
Headlight bulb, replacing ............................................. 8-55
High-range indicator light ............................................... 4-2
U1CT61E0.book Page 1 Wednesday, April 20, 2011 6:36 PM
