1987 Johnson GT 150 hp - Engine won't charge battery when running.

[RemingtonRepublic]

Hello all...I have a Johnson GT 150 ('87) and I'm trying to conclude what is the issue with it not charging the battery when running? Could this be the rectifier/regulator? I have found what looks like a hole burnt on the top of the R/R on my outboard, haven't pulled the flywheel yet to confirm actual burn hole, but from what I can see, seems to be that. Any ideas would be greatly appreciated! Thanks.

 

[emdsapmgr]

Re: 1987 Johnson GT 150 hp - Engine won't charge battery when running.

Those GT models have this high output 35 amp alternators. It is possible you have burned the rectfier/regulator which nests in the cooling water at the top of the block, just under the flywheel. I'd try to repair this before using it. These high output systems generate a lot of current and have been known to cause electrical fires when components are defective.

 

[RemingtonRepublic]

Re: 1987 Johnson GT 150 hp - Engine won't charge battery when running.

Sorry to take so long to thank you for your advice. I appreciate it. Thanks again, I'll try the rectifier/regulator and see.