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  1. J

    Piston Failure 1977 Evinrude 15HP

    So...I let a friend borrow our 15 hp backup engine (1977 Evinrude 15704M) and he indicated it ran great for the first few days Then it started to run real rough and acted as if only running on one cylinder. After further investigation, this is what we found. The upper piston looks as if it...
  2. J

    1998 25HP 3 cylinder power / ignition problems?

    I have a 25HP 3 cylinder engine that we have owned since new. We have never had a single issue with this engine except the initial start up after sitting for the winter. Once it runs once, it's good for the season. Anyway we have got the boat back into the water up at the cottage and the engine...
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