Shock Absorber Malfunction; Unstable Handling; Lighting System; Headlight Dark - Yamaha YFM660FS Grizzly 4x4 Supplementary Service Manual

SHOCK ABSORBER MALFUNCTION/UNSTABLE

SHOCK ABSORBER MALFUNCTION

MALFUNCTION
Bent or damaged damper rod
G
Damaged oil seal lip
G
Fatigued shock absorber spring
G

UNSTABLE HANDLING

UNSTABLE HANDLING
Handlebar
Improperly installed or bent
G
Steering
Incorrect toe-in
G
Bent steering stem
G
Improperly installed steering stem
G
Damaged bearing or bearing race
G
Bent tie-rods
G
Deformed steering knuckles
G
Tires
Uneven tire pressures on both sides
G
Incorrect tire pressure
G
Uneven tire wear
G

LIGHTING SYSTEM

HEADLIGHT DARK

Improper bulb
G
Too many electric accessories
G
Hard charging (broken charging coil and/or
G
faulty rectifier/regulator)
Incorrect connection
G
Improperly grounded
G
Poor contacts (main or light switch)
G
Bulb life expired
G
HANDLING/LIGHTING SYSTEM
Wheels
Deformed wheel
G
Loose bearing
G
Bent or loose wheel axle
G
Excessive wheel runout
G
Frame
Bent
G
Damaged frame
G

BULB BURNT OUT

Improper bulb
G
Faulty battery
G
Faulty rectifier/regulator
G
Improperly grounded
G
Faulty main and/or light switch
G
Bulb life expired
G
10 - 6
TRBL
SHTG