Honda CRF450R 2007 Service Manual

CRANKCASE/CRANKSHAFT /TRANSMISSION/BALANCER
SHIFT DRUM
Inspect the shift drum for scoring, scratches or evi-
dence of insufficient lubrication.
Check the shift drum grooves f or abnormal wear or
damage.
TRANSMISSION BEARING
SHIFT
DRUM
Turn the inner race of each bearing with your finger. r-- -- --- - ------------,
The bearings should turn smoothly and quietty.
Also check that the bearing outer race fits tightly in
the crankcase.
Replace any bearing if the inner race does not turn
smoothly and quietly, or if the outer race fits loosely
in the crankcase (page 13-18).
CRANKSHAFT REMOVAL
REMOVAL
Sepa rate the crankcase (page 13-'0).
Remove the transmission (page 13·11).
The crankshaft can Remove the crankshaft fr om the right crankcase.
be removed wirh
the transmission
installed.
13-14
RI GHT CRANKCASE
CRANKS H AFT
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Honda CRF450R 2007 Specifications

General

Engine Type	449cc liquid-cooled single-cylinder four-stroke
Bore x Stroke	96.0mm x 62.1mm
Compression Ratio	12.0:1
Transmission	5-speed
Final Drive	#520 chain; 13T/48T
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	110/90-19
Wheelbase	58.3 inches
Seat Height	37.6 inches
Fuel Capacity	1.9 gallons
Induction	Keihin 40mm carburetor
Ignition	CDI
Rear Suspension	Pro-Link Showa single shock with spring preload, 17-position rebound damping adjustability, and compression damping adjustment
Trail	4.6 inches