Honda CRF450R 2012 Service Manual

r,
Remove the boot.
Remove the snap ring from the master cylinder
body using the special tool as shown.
TOOL :
Snap ring plier s 07914-SA50001
Remove the washer, master piston and spring.
INSPECTION
Clean the inside of the cylinder and reservoir with
brake fl uid.
Check the piston boot, primary cup and secondary
cup for fa tigue or damage.
Check the mast er cylinder and piston for abnormal
scratches.
Measure the master cy l inder I. D.
SERVICE LIMIT : 11.050 mm 10. 4350 in)
Measure the master piston 0.0.
SERVICE LIMIT : 10 . 840 mm (0.4268 in)
HYDRAULIC BRAKE
,
WASHER
SPR I NG
PIST ON
°
0
16-13

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