Common motorcycle part issues at 1980 Honda CB650

by Goldie 18. September 2011 06:55

Every motorcycle series have common motorcycle parts issues more or less. One of these 1980 CB650 Honda motorcycle parts issues is turning off the field rotor when the charging voltage is too high; making the charging drop in which case the regulation circuit turns the field rotor back on. This issue sometimes is manifested similar to when the motorcycle is running out of gas.

The motorcycle ignition is battery-powered, so when the voltage drops down bellow 13.5V, the ignition system components shot down. Diagnosing bad rotor is easy, mount volt-ohm meter for testing the charging system output and the ohms value on the rotor tracks cold or hot.

Bad rotor can also cause bad regulator. When the rotor fails it draws too much current for the regulation circuit to supply, causing the regulator to die. This way this motorcycle part dies alongside the rotor.

Loss of spark can be caused by bad connection somewhere. Suspect any connection in the entire motorcycle. You can start diagnosing bad connection by taking off fairing motorcycle parts, the gas tank and seat, and disconnect all connections you find. Do these one at a time, and spray them with a contact cleaner before filling the connector again.

Also another motorcycle part could be suspected for resolving the issue. There is a vacuum-operated valve on these motorcycles. There is a fuel screen inside the fuel tank which requires draining the tank and removing the valve to draw the screen out from the inside the fuel tank. 

Comments

9/25/2011 2:48:01 AM #

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Just another starting issue with Honda motorcycles

Just another starting issue with Honda motorcycles

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