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    Fuel mixture WOT 1986 Yamaha 30 hp 2 stroke

    I guess my memory isn't what it used to be. A few years ago when I put in all new fuel lines and new diaphram in the fuel pump, I also got a carburetor rebuild kit. I thought for sure that the main jet was from that recent rebuild. When I checked the jet with some gauges - it was oversize by...
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    Fuel mixture WOT 1986 Yamaha 30 hp 2 stroke

    Choke seems to be working correctly. At first I had tried raising the float level, with the idea that at normal height it would allow more gas in through the needle valve. Now I have lowered the level of the float. I will try that out in the next day or two and report.
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    Fuel mixture WOT 1986 Yamaha 30 hp 2 stroke

    I have an older, well cared for Yamaha 30 hp engine that is giving me trouble at wide open throttle. It starts fine, idles, fine, picks up with some hesitation, but then never really winds up at full throttle. From looking at the plugs I am thinking that it is running too rich, but I don't...
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