Honda CRF450X 2008 Service Manual

TROUBLESHOOTING
POOR HANDLING
Steering is heavy
• Steering stem adjusting nut adjusted too tight
• Damaged steering head bear ings
• Low tire pressure
• After '07: F aulty steering damper
Either wh eel is wobbling
• Excessive wheel bearing play
• Bent rim
• Im properly installed wheel hub
• Excessively worn swingarm pivot bearings
• 8ent frame
The motorcycle pulls to one side
• Front and rear wheels not aligned
• Bent fork
• Bent swingarm
• Bent axle
• Bent frame
NOTE:
• For the following r ecommendations to be useful, the moto rcycle must be adjusted as follows:
- Fork: compression damping at standard position, at standard f ork oil quantity and viscosity, and air
pressure zero.
-
Shock: nitrogen pressure 142 pSi, com pression and rebound damping standard position, and
spr ing preload adjusted so t he bikes sags with rider seated· see Owner 's manual for spring pre·
load adjustme nt
• The follow ing recommendat ions are given in the pre ferred sequence of adjustment
Front End Oversteers; It Cut s Too Sharply (such as in send)
• Increase the fork oil capacity
• Use stiffer fork spring
Front End Understeers ; It Washes Out Or Pushes (such as on at tight track wit h hard g round)
• Lower fork oil capacity
• Use softer fork spring
Fr ont End Hunt s At High Speed; It Wanders Under Power
• Increase the fork oil capacity
• Increase the shock pr eload
Front End Shakes Under Heavy Braking
• Decrease shock preload
• Increase shock rebound damping
• Increase the f ork oil capacity
Front End Hop s Over Bumps In Smooth Turn s
• Change to lighter fork oil
• Decrease the f ork oil capacity
• Decrease fork compression damping
• Use softer fork spring
Rear End Hop s Over Bump s While Accelerating
• Decrease shock preload
• Decrease shock compression damping
Rear End Gets Poor Traction White Accelerating Away From A Corner
• Decrease shock preload
• Decrease shock compression damping
22-7

Honda CRF450X 2008 Specifications

General

Brand	Honda
Model	CRF450X 2008
Category	Motorcycle
Language	English