Honda CBR600F4i Series Service Manual page 490

TROUBLESHOOTING
POOR PERFORMANCE AT HIGH SPEED
Possi ble cause
1. Check ignition timing - - - - - - - - - - - Incorrect • Faulty ECM
I
Correct
t
2. Inspect t he fuel flow - - - - - - - - - - - Abnormal ►
•
Faulty pressure regu lator (Section
5 )
I
Normal
t
3. Inspect t he fuel inject or - - - - - - - - - - Abnormal - - - - - -- -
• See sect ion 5
1
Normal
t
4.
Check va lve timing
I
- - - - - - - Incorrect
• Ca mshaft not installed properly
Correct
~
5. Check valve spring - - - - - - - - - - - W e a k - - - - - - -- - -
• Faulty valve spring
I
Not weak
POOR HANDLING
1. Steeri ng is heavy
2. Wh1,11,1I wul.,l.,l1,1s
3. Motorcycle pulls to one side
22-4
Possible cause
Steering stem adjusti ng nut too t ight
Damaged steering head beari ngs
Excessive wheel bearing play
Bent rim
lmpropP.r installed wheel hub
Swingorm pivot bearing excessively
worn
Bent frame
Fa u lty shock abso rber
Front and rea r wheel not aligned
Bent fork
Bent swingarm
81,111l axl1,1