Honda CRF450X 2010 User Manual

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SERVICE INFORMATION
GENERAL
NOTICE
IGNITION SYSTEM
• The leM may be damaged if dropped. Also, if the connector is disconnected when current is flowing, the excessive vo/t-
age
may damage the module.
• Use a spark plug of rhe correct heat range. Using a spark plug with an incorrect heat range can damage the engine.
• When servicing the ignition system, always follow the steps in the troubleshooting sequence on page 18-4.
• The ignition timing cannot be adjusted since the I gnition Control Module UCM) is factory preset.
• A faulty igni t ion system is often related to poor connections. Check connections before proceeding.
SPECIFICATIONS
resistance
TORQUE VALUE
Timing hole cap
TOOLS
Peak voltage adaptor
07HGJ·0020100
with commerCially available digital
10 N·m ( 1. 0 kgf.m, 7 Ibf.ft)
I gnition Mate peak voltage tester
MTP07-0286 (U.S.A. only)
4-SIill
Apply grease to the threads
'" multimeter (impedance 10 MOJDCV
minimum)
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18-3

Honda CRF450X 2010 Specifications

General

Engine Type	449cc liquid-cooled single-cylinder four-stroke
Bore and Stroke	96mm x 62.1mm
Compression Ratio	12.0:1
Transmission	Wide-ratio five-speed
Final Drive	#520 chain; 13T/51T
Front Suspension	47mm inverted Showa cartridge fork with 16-position rebound and 16-position compression damping adjustability; 12.4 inches travel
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
Fuel Capacity	1.9 gallons
Ignition	Solid-state CD with electronic advance
Rear Suspension	Pro-Link Showa single shock with spring preload, 17-position rebound damping adjustability, and 13-position compression damping adjustability; 12.4 inches travel
Rake	27.38 degrees