Honda CRF450R 2012 Service Manual

1
l
Be Cllrsful no t to
d amag e the radia l or
core.
Installation is in the reverse order of removal.
Fill
the system with the recommended coolant and
bleed the air (page
7-7) .
After installation, check the radiator and radiator
hoses
for leaks.
RADIATOR RESERVE TANK
REMOVALIINSTALLA TION
Remove the right and center engine guard (page 3-5).
Remove the reserve tank cap and reserve tank.
Disconnect the radiator siphon and reserve tank
overflow hoses from radiator reserve tank.
Drain the reserve tank coolant.
Route tile hoses Installation is in the reverse order of removal.
Pf0p8r/y ('05 - '07:
page 1-25. Aher
'07: page 1..J2}.
WATER PUMP
MECHANICAL/OIL SEAL INSPECTION
Check for signs of seal leakage.
If water leaks through the bleed hole, replace the
mechanical seal (page
7-12).
If oil leaks through the bleed hole , replace the oil
seal (page 7-12).
A small amount of "weeping" from the bleed hole is
normal.
COOLING SYSTEM
HOLE
7-9

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