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  1. J

    Spark plug stipped, BIG problem

    I have a 64 mercury 650 and I noticed the top spark plug was loose, tried tightning it and found out it was stripped. The previous owner had already helicoiled it, but that helicoil striped out of the alluminum, so the hole is now huge and i can't just use another insert. What are the ways to...
  2. J

    Mercury 65hp 650 year

    I just recently purchaces a 17 foot boat and it has this motor on it, I need to get a manuel to start chasing down my powerloss problems and I need to know what year it is....the serial number is 1758733.....the boat is a 74.
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