2004-2009 Honda TRX450R/TRX450ER Service Manual, Page 470Get this manual

2004-2009 Honda TRX450R/TRX450ER Service Manual, Page 470

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IGNITION SYSTEM (After '05)
TROUBLESHOOTING
The ICM cut-off the ignition if the throttle lever is closed (throttle switch is off) and the throttle drum open (carburetor switch is off), als