Unstable Handling; Faulty Lighting And Signal Systems; Headlight Does Not Light; Bulb Burnt Out - Yamaha BT1100 2002 Service Manual

EB908000

UNSTABLE HANDLING

UNSTABLE HANDLING
Handlebar
• Improperly installed or bent
Steering
• Improperly installed handlebar crown
• Bent steering stem
• Improperly installed steering shaft (improperly
tightened ring nut)
• Damaged ball bearing or bearing race
Swingarm
• Worn bearing or bushing
• Bent or damaged
Rear Shock absorber
• Faulty spring
• Oil and gas leakage
Tire
• Uneven tire pressures on both sides
• Incorrect tire pressure
• Uneven tire wear
EB909000

FAULTY LIGHTING AND SIGNAL SYSTEMS

HEADLIGHT DOES NOT LIGHT

• Improper bulb
• Too many electric accessories
• Hard charging (broken stator coil wire, faulty rec-
tifier/regulator)
• Incorrect connection
• Improperly grounded
• Poor contacts (main or lights switch)
• Bulb life expired

FLASHER DOES NOT LIGHT

• Improperly grounded
• Discharged battery
• Faulty turn switch
• Faulty flasher relay
• Faulty wire harness
• Loosely connected coupler
• Burnt-out bulb
• Faulty fuse

FLASHER BLINKS SLOWLY

• Faulty flasher relay
• Faulty main and/or turn switch
• Improper bulb
UNSTABLE HANDLING/
FAULTY LIGHTING AND SIGNAL SYSTEMS
Front fork
• Uneven oil levels on both sides
• Uneven spring tension (uneven damping force
• Broken spring
• Twisted front fork
Wheel
• Incorrect wheel balance
• Deformed cast wheel
• Damaged bearing
• Bent or loose wheel axle
• Excessive wheel runout
Frame
• Bent
• Damaged steering head tube
• Improperly installed bearing race

BULB BURNT OUT

• Improper bulb
• Faulty battery
• Faulty rectifier/regulator
• Improperly grounded
• Faulty main and/or lights switch
• Bulb life expired

FLASHER REMAINS LIT

• Faulty flasher relay
• Burnt-out bulb
FLASHER BLINKS QUICKLY
• Improper bulb
• Faulty flasher relay
• Burnt-out bulb

HORN DOES NOT SOUND

• Faulty battery
• Faulty fuse
• Faulty main and/or horn switch
• Improperly adjusted horn
• Faulty horn
• Broken wire harness
8-5
adjuster position)
TRBL
?
SHTG