Re: Evinrude Lightwin problems

[Don]

Well-
I’m not sure, you could try it. The throttle cam linkage is different on the two carbs, so I don’t know if the 4hp throttle arm will line up properly with the 3hp throttle cam.
So, you think the powerhead has been apart previously, and the engine never ran right since you got it. The powerhead is surely suspect, except the symptoms are reversed. Usually, a messed up powerhead will idle poorly, but run "OK" at higher speeds. Did you notice if the pistons were installed correctly when you had the cylinder head off? The sharp sides of the piston deflectors should be facing the intake (right hand side) of the powerhead.
I hope the 4hp works out better for you, its weak link is the crazy side mount starter, it will be OK if you are careful with it though.
Pull the recoil rope slowly until the starter gear raises and engages the flywheel, then give it a short forceful tug. Never let go of the recoil handle allowing the rope to rewind on its own, the spring will get messed up.