188 TROUBLESHOOTING GUIDE
j
•
Pad surface glazed
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Brake disc warped
•
Brake caliper defective
•
Brake cylinder d amaged
Other noise:
•
Bracket, nut, bolt, etc. improperly mounted or
tightened
Exhaust smoke -
Excessively white:
•
Piston oil ring wo
rn
•
Cylinder worn
•
Valve oil seal damaged
•
Valve guide worn
•
Engine oil level too high
Black smoke:
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Air cleaner element clogged
Brownish:
•
Air cleaner duct loose
•
Aircleanerpoorlysealedormissing
Poor handling and/or stability -
Handlebar har
dtoturn:
•
Cable, hose, wiring incorrectly routed
•
Steering stem nut too tight
•
Steering st
em bearing damaged
•
Steering stem bearing inadequately lubricated
•
Steering stem bent
•
Tire air pressure too low
Handlebar shakes or v
ibrates excessively:
•
Tire worn
•
Swingarm sleeve or needle bearing damaged
•
Rim warped or out o
f balance
•
Front and/or rear axle runout excessive
•
Wheel bearing worn
•
Handlebar clamp loose
•
Steering stem head nut loose
•
Spoke loose
Handlebar pulls to one side:
•
Frame bent
•
Rear wheel mis
aligned
•
Swingarm bent or twisted
•
Swingarm pivot shaft runout excessive
•
Steering maladjusted
•
Steering stem bent
•
Front fork bent
Shock absorption unsatisfactory (suspension
too hard):
•
Front fo
rk oil excessive
•
Front fork oil viscosity too high
•
Front fork bent
•
Front fork air pressure too high
•
Tire air pressure too high
•
Rear shock absorber improperly adjusted
Shock absorption unsatisfactory (suspension
too soft):
•
Fro
nt fork oil level insufficient and/or front fork
leaking oil
•
Front fork oil viscosity too low