Spark plug inspection .........................8-25
Air filter element cleaning ...................8-31
Carburetor settings .............................8-39
Idle speed adjustment ........................8-51
Throttle lever adjustment ....................8-53
Brake fluid level check ........................8-55
Brake fluid replacement ......................8-57
Front brake pad check ........................8-59
Rear brake pad inspection .................8-59
Front brake lever free play .................8-61
Brake pedal height adjustment ...........8-63
Parking brake adjustment ...................8-65
Adjusting the rear brake light switch ...8-69
Clutch adjustment ...............................8-71
Autolube pump adjustment .................8-71
Drive chain slack check ......................8-73
Drive chain slack adjustment ..............8-75
Lubricating the drive chain .................8-77
Cable inspection and lubrication ........8-81
Brake and shift pedal/brake and
clutch lever lubrication ......................8-83Front upper and lower arm pivot
lubrication .........................................8-83
Steering shaft lubrication ....................8-85
Wheel removal ...................................8-87
Wheel installation ...............................8-87
Replacing the headlight bulb ..............8-89
Headlight beam adjustment ................8-97
Tail/brake light bulb replacement .......8-99
Troubleshooting ................................8-101
Troubleshooting chart .......................8-105
CLEANING AND STORAGE....................9-1
A. Cleaning ...........................................9-1
B. Storage ............................................9-7
SPECIFICATIONS .................................10-1
Conversion table ....................................11-1
9
10
11
5VM-9-61-01 3/14/03 9:34 PM Page 14
8-101
EBU00413
Troubleshooting
Although Yamaha machines receive a rigid
inspection 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 making checks. If
your machine requires any repair, take it to a
Yamaha dealer.
The skilled technicians at a Yamaha dealership
have the tools, experience, and know-how to
properly service your machine. Use only gen-
uine Yamaha parts on your machine. Imitation
parts may look like Yamaha parts, but they are
often inferior. Consequently, they have a short-
er service life and can lead to expensive repair
bills.
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8-105
EBU00440
Troubleshooting chart
Check fuel flow
1. Fuel
Check if there is
fuel in the fuel
tank
2. Compression
Kick the kick lever to
see if there is
compression
3. Ignition
Remove plug and
check electrodes
WetWipe clean with
dry cloth
DryAttach plug cap and
ground to chassisKick the kick
starter stronglySpark weak
Spark goodIgnition system normal
No spark
Ask a Yamaha dealer to inspect
Adjust plug gap or
replace plug
There is compressonCompression normal
Ask a Yamaha dealer to inspectNo compression
There is fuelTurn the fuel
cock to “OFF”
Remove the
fuel pipe
Water or dirt
mixed in fuel
No fuel
Fuel cock clogged
Some fuelTurn the fuel
cock to “RES”Restart engine
No fuelSupply fuel
Clean the fuel tank
Turn the fuel
cock to “ON”
Clean the fuel cock
5VM-9-61-05 3/14/03 10:48 PM Page 106
