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8-137
EVU01530
Troubleshooting
Although Yamaha vehicles receive a rigid inspec-
tion before shipment from the factory, trouble may
occur during operation. Any problem in the fuel,
compression, or ignition systems can cause poor
starting and loss of power. The troubleshooting
chart describes a quick, easy procedure for mak-
ing checks. If your vehicle requires any repair, take
it to a Yamaha dealer.
The skilled technicians at a Yamaha dealership
have the tools, experience, and know-how to prop-
erly service your vehicle. Use only genuine
Yamaha parts on your vehicle. Imitation parts may
look like Yamaha parts, but they are often inferior.
Consequently, they have a shorter service life and
can lead to expensive repair bills.
WARNING
Do not smoke when checking the fuel system.
Fuel can ignite or explode, causing severe in-
jury or property damage. Make sure there are
no open flames or sparks in the area, including
pilot lights from water heaters or furnaces.
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9-9
3. Remove the spark plug, pour about one ta-
blespoon of SAE 10W30 or 20W40 motor oil
in the spark plug hole and reinstall the spark
plug. Ground the spark plug wire and turn the
engine over several times to coat the cylinder
wall with oil.
4. Lubricate all control cables.
5. Block up the frame to raise all wheels off the
ground.
6. Tie a plastic bag over the exhaust pipe outlet
to prevent moisture from entering.
7. If storing in a humid or salt-air atmosphere,
coat all exposed metal surfaces with a light
film of oil. Do not apply oil to any rubber parts
or the seat covers.
8. Remove the battery and charge it. Store it in
a dry place and recharge it once a month. Do
not store the battery in an excessively warm
or cold place [less than 0°C (30°F) or more
than 30°C (90°F)].NOTE:_ Make any necessary repairs before storing the ve-
hicle. _
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10-5
Brakes:
System Front and rear unified
Type front Dual disc brake
rear Single disc brake
Operation Foot operation
Suspension:
Front suspension Double wishbone
Rear suspension Double wishbone
Shock absorber:
Front shock absorber Coil spring/oil damper
Rear shock absorber Coil spring/oil damper
Wheel travel:
Front wheel travel 185 mm (7.3 in)
Rear wheel travel 185 mm (7.3 in)
Electrical:
Ignition system DC CDI
Generator system AC magneto
Battery type U1L-11
Battery capacity 12 V 28.0 Ah
Headlight type: Krypton bulbModel YXR66FW
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10-6
Bulb voltage, wattage × quantity:
Headlight 12 V 30.0 W/30.0 W × 2
Tail/brake light 12 V 5.0 W/21.0 W × 2
Indicator lights:
Neutral indicator light LED
Reverse indicator light LED
Coolant temperature warning light LED
Parking brake indicator light LED
On-Command four-wheel-drive/differential gear
lock indicatorLCD
High-range indicator light LED
Low-range indicator light LED
On-Command differential gear lock indicator light LED
Specified fuses:
Main fuse 30.0 A
Headlight fuse 15.0 A
Ignition fuse 10.0 A
Auxiliary DC jack fuse 10.0 A
Four-wheel-drive motor fuse 3.0 A
Carburetor warmer fuse 10.0 A
Signaling system fuse 10.0 A
Backup fuse 10.0 AModel YXR66FW
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