Honda CRF450X 2005 User Manual

FRAME/BODY PANELS/EXHAUST SYSTEM
SERVICE INFORMATION
GENERAL
• This section covers removal and installation of the body panels, fuel tank and exhaust system.
• Serious burns may result if the exhaust system is not allowed to cool before components are removed or serviced.
• Always replace the exhaust pipe gaskets after removing the exhaust pipe from the engine.
• When installing the exhaust system, loosely install all of the exhaust system fasteners. Always tighten the exhaust pipe
joint nuts, then tighten the
mounting fasteners.
• Always inspect the exhaust system for leaks after installation.
TORQUE VALUES
Seat mounting bolt
Sub·frame upper mounting bolt
Sub-frame lower mounting bolt
Sub· frame upper/lower mounting bolt
Exhaust pipe joint nut
Muffler joint band bolt
Muffler mounting bolt
Heat shield bolt
Exhaust pipe protector bolt
Diffuser mounting torx screw
Rear fender mounting bolt
Radiator shroud upper mounting bolt
TROUBLESHOOTING
Excessive exhau st noi se
• Broken exhaust system
• Exhaust gas leak
Po or pe rf o rm an ce
• Deformed exhaust system
• Exhaust gas leak
• Clogged
muffler
3-2
('05 - '07)
('05
- '07)
(After '07)
('05
- '07)
26 N'm (2.7 kgf·m, 19Ibf· ft)
30
N·m (3.1 kgf ·m, 22 Ibf·ft)
49 N·m (5.0 kgf·m, 36 Ibf·ft)
49 N·m (5.0 kgf ·m, 36 Ibf.ft)
21 N·m (2.1 kgf · m, 15I bf·ft)
21 N·m (2.1 kgf · m, 15Ibf·ft)
26 N·m (2.7 kgf ·m, 19Ibf.ft)
12 N·m (1.2 kgf·m, 9 Ibf.ft)
12 N·m (1.2 kgf·m, 9 IbHt)
11 N·m ( 1. 1 kgf·m, 8 Ib f. ft)
13 N'm ( 1.3 kgf·m, 10 Ibf·ft)
5 N'm (0.5 kgf·m, 3.7 Ibf·ft)
•
•

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