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  1. #1

    787 Rotary Valve Seal?

    I have oil shooting out both pistons when starting with the plugs out. I've narrowed it down to the inner crank seals and the rotary valve seal. How do I fix these/find them?

  2. #2
    SLASHER's Avatar
    Join Date
    Jun 2007
    Australia, Perth WA
    Need to split crank and have replaced also can be rotary seal as well ...

  3. #3
    Where can I find the replacements? I can't find them online.

  4. #4
    Bump. How do I replace the inner crank seals?

  5. #5
    This is how I run a jetski shop in the desert nmpeter's Avatar
    Join Date
    May 2008
    Elephant Butte New Mexico
    you don' replace the crank, unless you are an experienced machinist in which case it will be possible to replace the seals

    as a hail mary, loop the oil injection line to the RV, put a few oz of tranny seal fix in there and run premix for a few tanks..might work..might not, but the crank needs to be rebuilt

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