Adjusting the rear brake lever and
brake pedal .................................... 8-105
Adjusting the rear brake light
switch ............................................. 8-109
Cable inspection and lubrication ...... 8-111
Lubricating the brake levers and
brake pedal .................................... 8-113
Rear knuckle upper and lower
pivot lubrication .............................. 8-115
Wheel removal ................................. 8-115
Wheel installation ............................. 8-117
Battery .............................................. 8-119
Battery maintenance ........................ 8-123
Fuse replacement............................. 8-125
Replacing a headlight bulb ............... 8-129
Headlight beam adjustment.............. 8-133
Tail/brake light bulb replacement ..... 8-133
Troubleshooting................................ 8-137
Troubleshooting chart....................... 8-139
CLEANING AND STORAGE .................. 9-1
A. Cleaning ........................................... 9-1
B. Storage ............................................ 9-7
SPECIFICATIONS ................................ 10-1
910
CONVERSION TABLE .......................... 11-1
11
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8-137
EBU00413
Troubleshooting
Although Yamaha machines receive a rigid in-
spection 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 pow-
er. The troubleshooting chart describes a quick,
easy procedure for making checks. If your ma-
chine 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 machine. Use only genuine
Yamaha parts on your machine. Imitation parts
may look like Yamaha parts, but they are often in-
ferior. 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.
U1D960.book Page 137 Wednesday, June 23, 2004 3:59 PM
8-139
EBU00724Troubleshooting chart
Starting problems or poor engine performance1. Fuel
Check if there is fuel
in the fuel tank.There is fuel.Turn the fuel cock
lever to “OFF”.No fuel.Fuel cock is
clogged.
Clean the
fuel cock. Some fuel.Turn the fuel cock
lever to “RES”.Restart the engine.
No fuel.Supply fuel.
2. Compression
Use the electric
starter to see if
there is compression.There is compression.
Compression normal.
No compression.Ask a Yamaha dealer to
inspect.
3. Ignition
Remove the
spark plug and
check the electrodes.WetWipe clean with dry cloth.
DryAttach spark plug cap and
ground to chassis.Use the
electric starter.Spark is good.Ignition system is
normal.
Spark is weak.
Adjust the spark plug gap
or replace the spark plug. No spark.
Ask a Yamaha dealer to
inspect. 4. Battery
Use the electric starter.Engine turns over
quickly.Battery is good.
Engine turns over
slowly.Check the battery lead connections,
and charge the battery if necessary.Check the
fuel flow.
Turn the fuel cock
lever to “ON”.
Remove the fuel hose
from the fuel cock.
U1D960.book Page 139 Wednesday, June 23, 2004 3:59 PM
