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  1. J

    before 1984, merc 20 HP thunderbolt no top end

    I got this boat from my grandfather from wisconsin, an 8' Aqua Lark, with a merc 20 on the back. I have it running, and with low, or little resistance, i can get high RPM's. I set the timing to about 28 degrees BTDC, the (Clymer) manual says 33. We took it out, and cant get any more than...
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