Honda CRF450X 2008 Service Manual

REAR WHEEL/SUSPENSION
TROUBLESHOOTING
Soft suspension
• Weak shock absorber spring
• Incorrect suspension adjustment
• Oil leakage from damper unit
• Tire pressure too low
• Nitrogen gas leakage from the reservoir
Stiff suspension
• Damaged shock absorber spherical bearing
• Bent damper rod
• Damaged swingarm pivo t bearings
• Damaged suspension linkage bearings
• Bent swingarm pivot
• I ncor rect suspension adjustment
• Tire pressure too high
Steers to one side or doe s not track s traight
• Bent rear axle
• Axle alignment/chain adjustment not equal on both sides
R
ea r whe el wobbles
• Bent rim
• Worn rear wheel bearings
• Faulty tire
• Tire pressure too low
• Faulty swingarm pivot bearings
R ea r wheel turns hard
• Faulty reaf wheel bearings
• Bent rear axle
•
Rear brake drag
• Drive chain too tight
R ea r suspension noise
• Faulty rear shock absorber
• loose rear suspension fasteners
L
15-7

Honda CRF450X 2008 Specifications

General

Engine Type	449cc liquid-cooled single-cylinder four-stroke
Bore and Stroke	96.0mm x 62.1mm
Compression Ratio	12.0:1
Transmission	5-speed
Final Drive	#520 chain; 13T/51T
Front Suspension	47mm inverted Showa cartridge fork with 16-position rebound and 16-position compression damping adjustability; 12.4 inches travel
Front Brake	Single 240mm disc with twin-piston caliper
Rear Brake	Single 240mm disc
Front Tire	80/100-21
Rear Tire	110/100-18
Wheelbase	58.3 inches
Seat Height	37.6 inches
Fuel Capacity	1.9 gallons
Induction	Keihin 40mm carburetor
Ignition	CD with electronic advance
Rear Suspension	Pro-Link Showa single shock with spring preload, 17-position rebound damping adjustability, and compression damping adjustment; 12.4 inches travel
Trail	4.6 inches