Honda CRF450R 2012 Service Manual

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CRANKCASE/CRANKSHAFT /TRANSMISSION/BALANCER
Each shift fork h as an identification mark , "EVR" is
for the right shift for k, "EYL· is the left shift fork and
"Eye· is for the center shift fork.
Apply transmission oil to the sh ift drum gu ide
grooves.
Apply molybdenum oil solution to the following
parts:
- Shift fork claw s and guide pins
-
Shift fork sliding s urf aces
-
Sh ift fork shaft
Install the shi ft forks to the grooves in the sl i ding
gears .
• Face all shift fork marks to the left crankcase.
Install the shift drum by al i gning the guide pins on
the shift forks with the guide grooves in the shift
drum.
Slide the shift fork shafts through the shift forks, and
into the crankcase.
CRANKCASE ASSEMBLY
Temporarily install the left crankcase.
Place the left crankcase facing down and separate
the l
eft and right crankcase halves.
Install the oil pump inner/ outer rotor and shaft in
the
left crankcase.
Install the one-way valve, dowel pins and a new
gasket.
"EVA "
13-25

Honda CRF450R 2012 Specifications

General

Engine Type	449cc liquid-cooled single-cylinder four-stroke
Bore x Stroke	96.0mm x 62.1mm
Compression Ratio	12.5:1
Induction	Programmed Fuel Injection (PGM-FI), 46mm throttle body
Ignition	CDI
Transmission	Close-ratio five-speed
Final Drive	#520 chain; 13T/48T
Front Brake	Single 240mm disc with twin-piston caliper
Rear Brake	Single 240mm disc
Front Tire	80/100-21
Rear Tire	120/80-19
Seat Height	37.6 inches
Ground Clearance	13.2 inches
Front Suspension	12.2 inches travel
Rear Suspension	Pro-Link Showa single shock with spring preload, rebound and compression damping adjustability; 12.4 inches travel
Rake	27° 04'
Trail	4.6 inches
Wheelbase	58.3 inches
Curb Weight	249 pounds