Just curious, how were they tested?  If the AC voltages (the stator is an AC output) going into the rectifier, was not checked, it was not tested.   If it was, I guess I missed that.  Hopefully it was the stator. 

Good luck with it.

 

Just a little note, anybody can work on something for an endless amount of time.  Being able to actually trouble shoot and fix something is a totally different skill set.

 

I see I'm rubbing a porky pine the wrong way, sorry.  

4 minutes ago, Way2slow said:

Just curious, how were they tested?  If the AC voltages (the stator is an AC output) going into the rectifier, was not checked, it was not tested.   If it was, I guess I missed that.  Hopefully it was the stator. 

Good luck with it.

Heck if I know but I bet 6 different human beings have tested every single thing on that motor every which way possible 

3 hours ago, Way2slow said:

Just curious, how were they tested?  If the AC voltages (the stator is an AC output) going into the rectifier, was not checked, it was not tested.   If it was, I guess I missed that.  Hopefully it was the stator. 

Good luck with it.

 

Just a little note, anybody can work on something for an endless amount of time.  Being able to actually trouble shoot and fix something is a totally different skill set.

 

I see I'm rubbing a porky pine the wrong way, sorry.  

Skills that I admittedly don’t have, no worries man. My only goal is to get to the bottom of this and learn 

It appears it was the rectifier, the new one is charging the battery! Good thing nobody shook my hand on that stator bet.......

 

1 million thanks to @galyonj

9 hours ago, Way2slow said:

I see a whole lot more blown rectifiers than bad stators and it's more than simple enough to check the stator voltage to the rectifier.

[...]

Rectifiers are usually blown by shorts and arc's, like when connecting jumper cables etc.

 

Those are all totally valid questions.

 

And this took way longer to fix than it had any right to, because I wasn't asking the right questions.

 

We did the testing for both the stator and the rectifier per the Mercury factory service manual for this engine.

 

The stator was out of range, but it was out of range low by 0.1Ω. So that was fine.

 

The rectifier passed with flying colors.

 

Neither test included reading the voltage output, and I just blew it by trusting the manual too much.

 

And your point about the usual cause of rectifiers dying is right on, because the whole reason we were working on it anyway is because his depth finder wiring developed a fault.

 

Anyway I should've checked the voltage, but we got it figured out in the end.

Now if only the lighting would stop I’d take her for a water test 

 

update: water test went well, no hiccups