Honda CRF450X 2010 User Manual

MAINTENANCE
DRIVE CHAIN ROLLER
Install t he dnve
dlsm rollers With
the '- ' mark factnQ
""t .
Remove the lete step bracket (page 15-30).
Inspect
the drive chain roilers for excessive wear or
binding.
SERVICE LIMIT :
Minimum ro ller 0 .0 .: Upp er: 39 mm 11 .5 In)
L owe r: 35 mm (1 .4 In)
Replace
the rollers if necessary. and tighten the
roller
bolt and nut to the specified torque .
TORQUE:
Dri ve chain ro ll er bo lt : 12 N'm 11 .2 kgf-m, 9 rbl· tt )
Dri\l8 chain roller nut: 12 N'm (1.2 kgf -m, 9 rbf· tt )
NOTE :
• Upper roller: Green
• Lower roller: Black
DRIVE/DRIVEN SPROCKET
~- ~ MARK
Inspect the drive and driven sprocket teeth for wear ,------------------,
4-28
or damage, replace them if necessary.
Never use a new drive chain on worn sprockets.
Both chain and sprockets must be in good condi-
tion. or the new replacement chain will wear rap-
idly.
Check the bolts and nuts on the drive and driven
sprockets.
If any are loose, torque them.
TORQUE:
Driv e sprocket bolt:
31 N'm (3.2 kgf ·m, 23 IbUtl
Driv en sprocket nut :
32 N'm (3.3 k gf ·m. 24 Ibf.ftl
NORMAL
•

Honda CRF450X 2010 Specifications

General

Engine Type	449cc liquid-cooled single-cylinder four-stroke
Bore and Stroke	96mm x 62.1mm
Compression Ratio	12.0:1
Transmission	Wide-ratio five-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
Fuel Capacity	1.9 gallons
Ignition	Solid-state CD with electronic advance
Rear Suspension	Pro-Link Showa single shock with spring preload, 17-position rebound damping adjustability, and 13-position compression damping adjustability; 12.4 inches travel
Rake	27.38 degrees