Honda CRF450R 2007 Service Manual

CYLINDER HEADIV ALVES
Ba sure fO mark the Remove the valve lifters from the camshaft holder
valve Mrers so they assembly.
can be ins/ailed In
their OfIgmal
posmons .
DISASSEMBLY
Remove the decompressor shaft and decompressor
pl unger .
Remove the stopper ring.
VALVE
Thread a 6 mrn bolt into the rocker arm shaft, and "":~~::::~
pull out the rocker arm shaft from the camshaft
holder.
Remove the rocker arm.
9-18
SHAFT
ROCKER ARM

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