Flywheel tries to turn when I hook up the battery

T

tom2

Seaman Apprentice
Joined
Mar 20, 2005
Messages
31
This is a 1977 70 hp johnson.After sitting for a while I hoohed a battery up to the motor and I noticed a arc at the battery terminal.And noticed that every time I would attach the battery the flywheel tries to turn.I disconnected the ignition plug and also pulled the plug wires thinking the plugs were trying to fire but I still have the same problem. The motor will start up and run fine.Any ideas what will cause this. If I leave the battery connected it will go dead.<br />Thanks,Tom
 
B

BoatBuoy

Rear Admiral
Joined
May 29, 2004
Messages
4,856
Re: Flywheel tries to turn when I hook up the battery

Another member had this happen a while back. It seems the recitifier was blown and allowing voltage back to the stator which attempted to act like an electric motor. Check your rectifier.
 
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