older Johnson 55hp, electrical issues

[lpotvin]

I have an older Johnson motor which runs well but draws power from my battery and gives it no charge. After about 2-3hrs of running, my battery is dead and I cannot start my motor. I should be able to disconnect the battery once the motor is started and it should stay running. Am I correct in this assumption? And where shoud I start looking for trouble?

 

[Joe Reeves]

Re: older Johnson 55hp, electrical issues

Disconnecting the battery when the engine is running will damage the charging system. The usual cause of your problem is a shorted rectifier.

What is the model number of that engine?

 

[johnb]

Re: older Johnson 55hp, electrical issues

Try this guy for advice and repair parts for older motors http://www.laingsoutboards.com/

 

[tashasdaddy]

Re: older Johnson 55hp, electrical issues

johnb, he can get plenty of help here. that is the purpose of this forum. again what motor do you have, year, model #. never disconnect a battery when a motor is running.