Honda CRF450R 2011 Service Manual

LUBRICATION SYSTEM
Ahar installing 8
snap ring, a/ways
rotate it in its
groove /0 be sure it
IS fully seated.
OIL JET
5-6
Check the pressure relief valve for damage or clogs.
Remove the O-ring from the pressure relief valve.
INSTALLATION
Apply oil to a new O-ring and install it onto the
pressure relief valve.
Install the pressure re l ief valve into the left
crankcase cover.
Install the snap ring securely.
Install the l eft crankcase cover (page 12-6 ).
REMOVAL/INSPECTION
Separate the left and right crankcase halves (page ,..~~~'O:
13-10).
Remove the bolt and oil jet from the left crankcase.
Check the left crankcase oil passage for clogg ing.
Clean the oil passage.
Check the oil jet for damage or clogging.
Blow the oil passage in the oil jet wi th compressed
air.
OIL JET
•
•

Honda CRF450R 2011 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	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
Trail	114mm (4.5 inches)
Induction	PGM-FI, 46mm throttle body
Front Suspension	48mm inverted with rebound and compression damping adjustability; 12.2 inches travel
Rear Suspension	Pro-Link single shock with rebound and compression damping adjustability; 12.4 inches of travel
Wheelbase	58.7 inches
Seat Height	37.6 inches
Fuel Capacity	1.5 gallons