TROUBLESHOOTING
9-3
● Incorrect spark plug gap
● Incorrect spark plug heat range
2. Ignition system
● Faulty ECU (engine)
EAS28610
OVERCOOLING
Cooling system
1. Thermostat
● Thermostat stays open
EAS28620
POOR BRAKING PERFORMANCE
● Worn brake pad
● Worn brake disc
● Air in hydraulic brake system
● Leaking brake fluid
● Faulty brake caliper kit
● Faulty brake caliper seal
● Loose union bolt
● Damaged brake hose
● Oil or grease on the brake disc
● Oil or grease on the brake pad
● Incorrect brake fluid level
EAS28660
FAULTY FRONT FORK LEGS
Leaking oil
● Bent, damaged or rusty inner tube
● Cracked or damaged outer tube
● Improperly installed oil seal
● Damaged oil seal lip
● Incorrect oil level (high)
● Loose damper rod assembly bolt
● Damaged damper rod assembly bolt copper
washer
● Cracked or damaged cap bolt O-ring
Malfunction
● Bent or damaged inner tube
● Bent or damaged outer tube
● Damaged fork spring
● Worn or damaged outer tube bushing
● Bent or damaged damper rod
● Incorrect oil viscosity
● Incorrect oil level
EAS28670
UNSTABLE HANDLING
1. Handlebar
● Bent or improperly installed handlebar
2. Steering head components
● Improperly installed upper bracket
● Improperly installed lower bracket
(improperly tightened ring nut)
● Bent steering stem
● Damaged ball bearing or bearing race
3. Front fork leg(s)
● Uneven oil levels (both front fork legs)
● Unevenly tensioned fork spring (both front
fork legs)
● Broken fork spring
● Bent or damaged inner tube
● Bent or damaged outer tube
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
● Deformed cast wheel
● Damaged wheel bearing
● Bent or loose wheel axle
● Excessive wheel runout
8. Frame
● Bent frame
● Damaged steering head pipe
● Improperly installed bearing race
EAS28710
FAULTY LIGHTING OR SIGNALING SYSTEM
Headlight does not come on
● Wrong headlight bulb
● Too many electrical accessories
● Hard charging
● Incorrect connection
● Improperly grounded circuit
● Poor contacts (main or light switch)
● Burnt-out headlight bulb
Headlight bulb burnt out
● Wrong headlight bulb
● Faulty battery
● Faulty rectifier/regulator
● Improperly grounded circuit
● Faulty main switch
● Faulty light switch
● Headlight bulb life expired
Tail/brake light does not come on
● Wrong tail/brake light bulb
● Too many electrical accessories
● Incorrect connection
● Burnt-out tail/brake light bulb
Tail/brake light bulb burnt out
● Wrong tail/brake light bulb
● Faulty battery
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