Honda CRF450R 2011 Service Manual

•
'-.
SERVICE INFORMATION
GENERAL
FUEL
SYSTEM
• Bending or twisting the control cables will impair smooth operation and could cause the cable to stick or bind, resulting
in loss of vehicle control.
• Work in a well ventilated area. Smoking or allowing flames or sparks in the work area or where gasoli ne is stored can
cause a fire or explosion.
• Before disassembling the carburetor, pl ace an approved gasoline container under the carburetor drain plug, remove the
drain plug and drain the carburetor .
• When disassembling the fuel system parts, note the locations of the O-rings. Replace them with new ones on reassem-
biV .
• After removing the carburetor , wrap the intake port of the engine with a shop towel or cover it with a piece of tape to
prevent
any foreign material from dr opping into the engine . Be sure to r emove the cover when reinstalling the carbure-
tor.
• If the vehicle is to be stored for more than one month, drain the float chamber . Fuel left in the float chamber may cause
clogged jets
resulting in hard starting or poo r dr iveability.
SPECIFICATIONS
; ,
iii
56 kPa (420 mm Hg)
4 - 6k!l
6-3

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