Re: HELP 4HP Mercury problem

[billw]

Check the float needle and seat. If it is still the original set up, it will have a metal point needle and rubber SEAT. (Due, I suspect, to Mercury’s propensity to do EVERYTHING opposite of OMC.) Anyway, the rubber seat can swell to make its effective opening very small. Thus you can fill the bowl, the engine runs but the fuel can’t reenter the bowl as fast as the engine uses it. Solution is to replace them with new ones, that are rubber-pointed with a metal seat, like normal humans would make. Just one thought. I have seen it.

Long live American manufacturing!