Headlight Does Not Come On; Headlight Bulb Burnt Out; Taillight Does Not Come On - Yamaha WR450F Owner's Service Manual

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

HEADLIGHT DOES NOT COME ON

EAS2GC1422
Electrical system
1. Headlight
• Fuse open circuit
• Wrong headlight bulb
• Too many electrical accessories
• Hard charging
• Incorrect connection
• Improperly grounded circuit
• Poor contacts (start switch)
• Burnt-out headlight bulb
EAS2GC1423

HEADLIGHT BULB BURNT OUT

Electrical system
1. Headlight
• Wrong headlight bulb
• Faulty battery
• Faulty rectifier/regulator
• Improperly grounded circuit
• Faulty start switch
• Headlight bulb life expired

TAILLIGHT DOES NOT COME ON

EAS2GC1424
Electrical system
1. Taillight
• Wrong taillight LED
• Too many electrical accessories
• Incorrect connection
• Faulty battery
TROUBLESHOOTING
10-4