78 Johnson 115 stator question

singledoubt88

Seaman
Joined
Mar 29, 2010
Messages
61
So I've got a classic case of a JohnRude. When I bought the motor with Evinrude 85 decals on the cowl I assumed that's what I was getting...
The plate on the transom bracket has the serial number 85899c. However the plug on the power head reads 115ml78c. The motor has power tilt and trim.
It is my understanding that these motors are equipped with 10 amp stators if they are also equipped with power tilt and trim. If they are manual tilt they have 6 amp stators.
My rectifier recently fried and needs replacement, and I've read a couple threads about upgrading to a water cooled regulator/rectifier. Namely this one

http://www.iboats.com/Boat-Parts-Ac...--gd_partfinder.1--gd_poid.334784--gd_row.200

It is meant for a 10 amp stator, so my question is how do I find out which stator I have on this motor?
I had an overheating problem and I think it is what melted the potting a bit and fried my rectifier. I could be way off on that, but all my connections are very clean and tight. Not sure what else could cause this? My tach works only about 5% of the time and the charging system only works when the tach does. So I thought I 'd replace the rectifier with an upgraded water cooled one.
Sorry about writing a book fellas, just thought some info would help. Thanks in advance for any suggestions!
 

emdsapmgr

Supreme Mariner
Joined
Dec 9, 2005
Messages
11,551
Re: 78 Johnson 115 stator question

Normally that engine takes the simple rectifier only. It is likely that you can install one of the water cooled combination rectfier/regulators in it's place. Before you do that I'd probably give the Bombardier consumer hotline a call and ask for recommendations. They are in Waukegan, Ill 847-689-7090
 

singledoubt88

Seaman
Joined
Mar 29, 2010
Messages
61
Re: 78 Johnson 115 stator question

Thanks for the reply emdsapmgr,

I've heard of people using the water cooled rectifiers/regulators with no problem... If you have a 10 amp stator, I just need to figure out a way to find out which stator I have either a 6 or 12 amp.
This will be my third replaced rectifier, could a bad stator or another component be making these things go bad?
 
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