points gapping Mercruiser 120 1972-78

[scott56443]

I have a Mercruiser 120 Hp 1972-78 stearn drive. It is a 4cylinder. I am changing the one breaker in this unit the old one is pretty bad what do I gap the new one at?

Thanks Scott

 

[Bt Doctur]

Re: points gapping Mercruiser 120 1972-78

.018 or the thickness of a matchbook.

 

[Don S]

Re: points gapping Mercruiser 120 1972-78

.018 or the thickness of a matchbook.

That will get you close enough to run the engine so you can check and reset using a dwell meter. Then reset the timing since changing the dwell changes the timing.