Honda CB 600F Hornet 2007 Shop Manual page 577

ENGINE LACKS POWER
1. Drive Train Inspection
Raise wheel off the ground and spin by hand.
Did the wheel spin freely?
YES
NO
2. Tire Pressure Inspection
Check the tire pressure.
Are the tire pressures correct?
YES
NO
3. Clutch Inspection
Accelerate rapidly, shift from first to second.
Did the engine speed change accordingly when clutch is released?
YES
NO
4. Engine Performance Inspection
Accelerate lightly.
Did the Engine speed increase?
YES
NO
5. Spark Plug Inspection
Remove and inspect spark plugs.
Are the spark plugs in good condition?
YES
NO
6. Engine Oil Inspection
Check the oil level and condition.
Is the engine oil good condition?
YES
NO
7. Ignition Timing Inspection
Check the ignition timing.
Is the ignition timing as specified?
YES
NO
- GO TO STEP 2.
- • Brake dragging
• Worn or damaged wheel bearings
- GO TO STEP 3.
- • Faulty tire valve
• Punctured tire
- GO TO STEP 4.
- • Clutch slipping
• Worn clutch discs/plates
• Warped clutch discs/plates
• Weak clutch spring
• Additive in engine oil
- GO TO STEP 5.
- • Dirty air cleaner
• Restricted fuel flow
• Clogged muffler
- GO TO STEP 6.
- • Plugs not serviced frequently enough
• Incorrect spark plug heat range
• Incorrect spark plug gap
- GO TO STEP 7.
- • Oil level too high
• Oil level too low
• Contaminated oil
- GO TO STEP 8.
- • Faulty ECM
• Faulty CKP sensor
• Improper valve timing
TROUBLESHOOTING
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