1986 Merc 150hp Charging

ray914

Seaman
Joined
Mar 30, 2010
Messages
62
Hey everyone my engine won't keep the battery charged? Any suggestions?
 

Barnacle_Bill

Admiral
Joined
Feb 8, 2004
Messages
6,469
Re: 1986 Merc 150hp Charging

Test your rectifier. They are the most common part to fail in the charging circuit. I believe it is part of the regulator on that motor. Your manual will tell you how to test it.
 

j_martin

Admiral
Joined
Sep 22, 2006
Messages
7,474
Re: 1986 Merc 150hp Charging

Test your rectifier. They are the most common part to fail in the charging circuit. I believe it is part of the regulator on that motor. Your manual will tell you how to test it.

If you don't have a manual, check out the troubleshooting area at the CDI web site.
 

444

Senior Chief Petty Officer
Joined
Jul 16, 2010
Messages
704
Re: 1986 Merc 150hp Charging

You've tried a different battery as well?
 
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