Honda CRF450X 2005 User Manual

Route the wife
harness properly
('05
- '07: page /.
25, After '07: PBge
1-32).
ENGINE REMOVAl/INSTALLATION
Connect the alternator 4P (Black) and ignition pulse r-
generator 2P (Black) connectors.
Install the wi re band.
Connect the starter motor cable and tigh ten the nut ~~~~~~ ~
securely.
Connect the clutch cable to the clutch tifter lever.
Install the cl utch cable stay and ground cable and
tighten the bolts securel y.
Connect the b reather hoses.
Install the following:
- Ignition coi' (page 18-8)
Radiator reserve tank (page 7-9)
Brake pedal (page 16-24)
Gearshift pedal (page' 1-27)
Kickstarter pedal (page 11-7)
Drive sprocket (page 8-4)
Carburetor (page 6-24)
Exhaust system (page 3-14)
Spark plug cap (page 4-12)
Fuel tank (page 3-8)
Left/right/canter engine guards (page 3-5)
Seat (page 3-3)
'05 and '06 Install the PA IR control valve (page 6- 30 1.
callfom~ type.
After '06'
Fill the system with the recommended coolant and
bleed the ai r (page 7- 71 .
Fill
the engine with the r ecommended engine oil
(page
4-19).
Fi ll the transmission with the r ecommended trans-
mission oil (page 4-23).
After installing the engine. perform the following
inspections and adjustments:
- Thronle grip freeplay (page 4-91
-
Drive chain slack (page 4-24)
- Clutch lever freeplay (page 4-31)
Check the exhaust system fo r leaks.
8-9

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