Yamaha YFM660FS, Supplementary Service Manual

Page: 476 / 478

10 - 6
TRBL
SHTG
SHOCK ABSORBER MALFUNCTION
MALFUNCTION
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Bent or damaged damper rod
●
Damaged oil seal lip
●
Fatigued shock absorber spring
SHOCK ABSORBER MALFUNCTION/UNSTABLE
HANDLING/LIGHTING SYSTEM
UNSTABLE HANDLING
UNSTABLE HANDLING
Handlebar
●
Improperly installed or bent
Steering
●
Incorrect toe-in
●
Bent steering stem
●
Improperly installed steering stem
●
Damaged bearing or bearing race
●
Bent tie-rods
●
Deformed steering knuckles
Tires
●
Uneven tire pressures on both sides
●
Incorrect tire pressure
●
Uneven tire wear
Wheels
●
Deformed wheel
●
Loose bearing
●
Bent or loose wheel axle
●
Excessive wheel runout
Frame
●
Bent
●
Damaged frame
LIGHTING SYSTEM
HEADLIGHT DARK
●
Improper bulb
●
Too many electric accessories
●
Hard charging (broken charging coil and/or
faulty rectifier/regulator)
●
Incorrect connection
●
Improperly grounded
●
Poor contacts (main or light switch)
●
Bulb life expired
BULB BURNT OUT
●
Improper bulb
●
Faulty battery
●
Faulty rectifier/regulator
●
Improperly grounded
●
Faulty main and/or light switch
●
Bulb life expired