Stearns engine

1985cj7 · May 11, 2017

I am working on a 4 cylinder stearns engine. The engine used to start fine...3 "1/4 turns" and it would fire right up. Now you cant start it by using crank but when you pull start it, you only have to move a foot or 2 and it fires right up and runs smooth as could be. Carb is clean and is same carb that was on it when it would start fine. What magneto is supposed to be run on this engine and what can be used in its place? Also what spark plugs need to be ran in it. I believe it currently has AC 75COM plugs in it. Thanks.

teddy52food · May 11, 2017

Get the impulse fixed in the mag you have.

Dean · May 11, 2017

Good advise from Teddy, below.

Most likely, the impulse coupling has failed or, the armature is gummed up with tar preventing the impulse from working properly.

Dean

1985cj7 · Jun 13, 2017

Where is the timing mark found? Pulled a pipe plug close to belt pully and didnt see any mark there. Just a grease zerk in that hole as you turn motor over.

Stearns engine

1985cj7

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teddy52food

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Dean

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1985cj7

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