Re: 12 hp gale 1956

[frankr]

1957evinrude and all, I believe I have had several discussions with that member on this issue. The N/S is part number is 376137. It is a special part because the 12S12 has an integral tank and the hole in the float valve seat is very large to allow enough flow to supply the engine with only a couple inches of gravity pressure on the fuel. His problem arises because this motor has been converted to fuel pump, and pressure exerted by squeezing the primer bulb forces the needle off the seat and the carb overflows. But I understand it works fine when running with only fuel pump pressure behind it.

With all that history, it is my belief that what he really is looking for is a float valve with a smaller seat hole. As I remember, that carburetor has a different thread size than "normal" OMC carburetors, so the "normal" float valve will not fit. Unless somebody knows of a needle & seat with a smaller hole that will fit that carb, I don’t think there is a cure for the overflowing except more gentle squeezing of the primer bulb

OR…if it that annoying, perhaps he might consider swapping the carburetor with one from a 12hp Deluxe motor (which used a remote tank and fuel pump and "normal" float valve). I haven’t explored that possibility, but am guessing it will work.

Disclaimer: Of course, I might have the wrong member and discussion in mind.