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  1. 6

    63' evinrude 10hp Sportwin Loss of power in water

    Ok, my 63 10hp sportwin, when its on muffs it revs up great and idles ok, mess with high/low and it smooths out, now switch to lake, or in tank. now engine runs smooth, but full throttle seems like half throttle, its pushing a 12ft alum john boat. I messed w/ high/low. I have spark, all new ign...
  2. 6

    1963 evinrude 10hp sportwin need help

    ok guys, i need some help, i know mechanics very well, iam very skilled in auto, boats uhhhh little bit, know the basics of internal combustion. i have a 63 10hp sportwin, i need alot of suggestions, the guy before me put all new electric in it IE coil, points etc.. now my problem, it seems...
  3. 6

    1963 evinrude sportwin 10hp, ign problem

    my 63 evin 10hp only the top cylinder is firing, bottom one cuts in and out, runs fine but bogs down, then it revs up then bogs, revs up bogs, etc... worked on carb thats fine, lean/rich knobs good, noticed only bottom plug gets fouled, and only sparks when it feels like it, any suggestions...
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