Replacing stator.....???

F

firemedichunter

Cadet
Joined
Apr 22, 2010
Messages
12
I have a '74 Johnson 50hp. No sparkie. I found the stator insulation has melted and it appears I will be replacing the stator. I'll also swap out the old rectifier to be safe.

What do I need to know to swap the stator? I am very mechanically inclined however I may be a little naive in regards to timing issues. Can I just mark the flywheel and put it back on in the same spot? I do not have a manual. Anyone have time to offer a quick step-by-step to replacing the stator and doing the timing? Thanks!!!
 
F

F_R

Supreme Mariner
Joined
Jul 7, 2006
Messages
28,226
Re: Replacing stator.....???

No big surprises. Replacing the stator does not affect the timing. Use Locktite screwlock on the stator screw threads. The flywheel can only go on one way.

You MUST be sure the shaft and flywheel tapers are clean and dry and you MUST use a torque wrench to tighten the nut to specs. I "think" that is 100-105 ft lbs, but check that out before believing it.
 
F

firemedichunter

Cadet
Joined
Apr 22, 2010
Messages
12
Re: Replacing stator.....???

Yeah, it is 105lbs. I did get a manual and it says to always check the timing any time the flywheel is replaced. The flywheel can only go on one way and the stator can only go on one way so the timing shouldn't change, right? I think the timing might change if I have to change the timer base, though.

I am replacing the stator because I lost spark. the coils and pack appear okay but the stator appears to have melted away the insulation and dripped on top of the powerhead. I am also replacing the rectifier as I know that a bad rectifier can destroy the stator. Can the timer base actually go bad?
 
F

F_R

Supreme Mariner
Joined
Jul 7, 2006
Messages
28,226
Re: Replacing stator.....???

No need to mess with the timer base or timing for what you are going to do. Timer bases rarely go bad. Before I get in trouble, "rarely" is not the same as "never".

Go ahead and replace the rectifier if it makes you feel good. But you can test it, you know.
 
You must log in or register to reply here.
Top