older Johnson 55hp, electrical issues

L

lpotvin

Recruit
Joined
Apr 5, 2008
Messages
3
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

Joe Reeves

Supreme Mariner
Joined
Feb 24, 2002
Messages
13,262
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?
 
tashasdaddy

tashasdaddy

Honorary Moderator Emeritus
Joined
Nov 11, 2005
Messages
51,019
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.
 
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