Honda CRF450X 2005 User Manual

-~ ..
Dnve In a new
bearing squarely
with the markmg
side f acmg toward
t he inside of the
camshaft holder.
T urn the inner race of the camshaft bearing with
your finger.
The bearing should turn smoothly and quietly.
Also check that the bearing outer race fits tightly in
the camshaft holder.
Remove and discard the bearing if the race does not
turn smoothly, quiet ly, or if it fits loosely in the cam-
shaft holder.
Apply
oil to a new bearing.
Install a new bearing into the hub using the speci al
tools.
TOOLS:
Driver
Att ac hm ent, 37 )( 40 mm
Pi lot, 20 mm
07749 - 0010000
07746-0010 2 00
0774 6- 004 05 00
Check the valve lifter bo re scoring, scratches or
damage.
Measure each valve lifter bore I.D.
SERVICE LIMIT: 26.04 mm ' 1.025 in)
Check the valve lifter for scoring, scratches or dam-
age.
Measure each varve lifter 0 . 0.
SER VICE LIMIT: 25.97 mm (1 .022 in )
CYLINDER HEADIVALVES
9-13

Honda CRF450X 2005 Specifications

General

Engine Type	449cc liquid-cooled single-cylinder four-stroke
Bore x Stroke	96.0mm x 62.1mm
Compression Ratio	12.0:1
Valve Train	Unicam, four-valve
Transmission	Wide-ratio five-speed
Front Brake	Single 240mm disc with twin-piston caliper
Rear Brake	Single 240mm disc
Front Tire	80/100-21
Rear Tire	110/100-18
Wheelbase	58.3 inches
Seat Height	37.6 inches
Fuel Capacity	1.9 gallons
Ignition	Solid-state CD with electronic advance
Final Drive	520 O-ring-sealed chain
Front Suspension	47mm inverted Showa cartridge fork with 16-position rebound and 16-position compression damping adjustability; 12.4 inches travel
Rear Suspension	Pro-Link Showa single shock with spring preload, 17-position rebound damping adjustability, and compression damping adjustment separated into low-speed (13 positions) and high-speed (3.5 turns); 12.4 inches travel
Induction	Keihin 40mm flat-slide carburetor