Yamaha FZ09E 2014, Service Manual, Page: 450 / 468

TROUBLESHOOTING
9-3
•
Damaged pipe
• Improperly connected pipe
Fuel system
1. Throttle body (-ies)
•
Damaged or loose throttle body joint
2. Air filter
•
Clogged air filter element
Chassis
1. Brake(s)
• Dragging brake
Electrical system
1. Spark plug(s)
•
Incorrect spark plug gap
• Incorrect spark plug heat range
2. Ignition system
• Faulty ECU
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