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    1972 Mercury 402 40HP boggs down at full throttle

    Hey guys, I have a 1972 Mercury 402 40 HP that runs great at idle, but when you hammer down on it, it boggs down and goes very slow. Some people are telling me that it sounds like the high speed jet but if om not mistaken, there is only one jet for both low and high speeds. Here is a drawing so...
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    How to adjust arms that push on needle in carburetor?

    Does anyone know how to adjust the two arms that the float pushes up into the needle on a Mercury 1972 402 40 HP. I know you can bend them to change when they contact the needle but dont know the factory specs or measurements. Can someone tell me or guide me in the right direstion to find this...
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    1972 40HP Mercury Gas Pouring Out of Overflow

    HELP! I have a 1972 Mercury 402 40 HP. While out on the lake, it started running very badly. Had to throttle all the way up to get it started. Then if I couldn't keep it running on the first try, it would be flooded and I would have to wait 20-30 minutes. When running and trying to prime there...
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