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1999 Yamaha SUV 1200 hole in #2 piston

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  • 1999 Yamaha SUV 1200 hole in #2 piston

    Son was out riding with friends and heard a pop, entire ski shut down. Had
    to be towed home. Couldn't get it to restart, no power to the ski.
    Pulled plugs and have a hole on top of #2 cylinder. In process of removing
    engine and tear down. Son refueled ski, not sure he put right ratio oil with
    gas. (removed oil pump and went to pre-mix). Engine was rebuilt in 2008 by
    previous owner, total tear down and rebuild by professionals . I know the top
    end will need to be rebuilt, how can I evaluate the bottom end or should I just
    consider a total rebuild? Thanks in advance.
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