Rectifier for 1997 Johnson 70 hp outboard

Does anyone agree or have a solution for my dilemma? My outboard runs fine but last weekend the tach started reading incorrectly (jumping all over the dial from 3500 rpm to 7000 rpm all while only going about 2000 rpm) and the in dash volt meter indicated it was not charging properly (12.2 volts when normally 14.2). I did some research in my giant repair book for Johnson outboards and the finger points to the rectifier. It says that most failures of the tachometer come from a failure of the rectifier since that's where it gets it's input and where the charge for the battery comes from, a low voltage output would also point to the rectifier. Any help would be appreciated.

Thank you,
Richard W.

Re: Rectifier for 1997 Johnson 70 hp outboard

Yes, that certainaly points to a bad rectifier same indications as mine was when it went out.

Re: Rectifier for 1997 Johnson 70 hp outboard

Will Bark,
Thanks for your input. Ordered one on Sunday. Should get it by Thursday just in time for my week vacation at the beach. I hope it works. Thanks again.