Faulty Lighting System - Yamaha WR450FB 2012 Owner's Service Manual

4. Swingarm
• Worn bearing or bushing
• Bent or damaged swingarm
5. Rear shock absorber assembly (-ies)
• Faulty rear shock absorber spring
• Leaking oil or gas
6. Tire (s)
• Uneven tire pressures (front and rear)
• Incorrect tire pressure
• Uneven tire wear
7. Wheel (s)
• Incorrect wheel balance
• Broken or loose spoke
• Damaged wheel bearing
• Bent or loose wheel axle
• Excessive wheel runout
8. Frame
• Bent frame
• Damaged steering head pipe
• Improperly installed bearing race
EAS1DX3245

FAULTY LIGHTING SYSTEM

Headlight does not come on
• Fuse open circuit
• Wrong headlight bulb
• Too many electrical accessories
• Hard charging
• Incorrect connection
• Improperly grounded circuit
• Poor contacts (main switch)
• Burnt-out headlight bulb
Headlight bulb burnt out
• Wrong headlight bulb
• Faulty battery
• Faulty rectifier/regulator
• Improperly grounded circuit
• Faulty main switch
• Headlight bulb life expired
Taillight does not come on
• Wrong taillight LED
• Too many electrical accessories
• Incorrect connection
• Faulty battery
TROUBLESHOOTING
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