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  1. M

    Mariner 100 Hp - 24' Pontoon

    I have a 1988 Mariner 100 hp outboard and am pushing a 24' pontoon boat with a top deck on it. If I try to accelerate quickly the motor will rev very high but the boat will not speed up, as if the prop is cavitating (?). I can only accelerate slowly to get to top speed. I have no idea what...
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