Honda CB 600F Hornet 2007 Shop Manual page 580

TROUBLESHOOTING
POOR PERFORMANCE AT HIGH SPEED
1. Ignition Timing Inspection
Check the ignition timing.
Is the ignition timing as specified?
YES
NO
2. Fuel Pump Inspection
Inspect the fuel flow.
Is the fuel pump unit operation normal?
YES
NO
3. PGM-FI System Inspection
Check the PGM-FI system.
Is the PGM-FI system normally?
YES
NO
4. Valve Timing Inspection
Check the valve timing (page 8-28).
Is the valve timing correct?
YES
NO
5. Valve Spring Inspection
Check the valve springs.
Is the valve spring free length as specified?
YES
NO
POOR HANDLING
Steering is heavy
• Steering stem adjusting nut too tight
• Damaged steering head bearings
• Insufficient tire pressure
Either wheel is wobbling
• Excessive wheel bearing play
• Bent rim
• Swingarm pivot bearing excessively worn
• Bent frame
The motorcycle pulls to one side
• Front and rear wheel not aligned
• Faulty shock absorber
• Bent fork
• Bent swingarm
• Bent axle
• Bent frame
23-6
- GO TO STEP 2.
- • Faulty ECM
• Faulty CKP sensor
• Faulty VS sensor
• Improper valve timing
- GO TO STEP 3.
- Faulty fuel pump unit (page 5-55).
- GO TO STEP 4.
- Faulty PGM-FI system (page 5· 11 ).
- GO TO STEP 5.
- Camshafts not installed properly
- Not weak
- Faulty valve springs