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  1. #1
    dsw222's Avatar
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    What did i mess up?

    Ugh. I'm getting frustrated with these damn skis.

    On my 1200R, I had the stinger, battery box, electrical box, pump shoe, ride plate, and intake grate all pulled off... plus I had all 8 bolts removed from the pump but I couldn't get it pryed from the ski. So I ended up just putting it all back together (bought a 1300R instead). While i was putting it back together, a bolt on the intake grate snapped. But its on super tight with the other 3 so i dont think this is my problem.

    Anyways... i took it out today, and the engine sounds great, but it cavitates a LOT. If I gun the engine, it will basically stay in place (maybe go up to 10) while the engine revs super high around 7k.

    If i baby the throttle, it will act like it should and get all the way up to 50's (i didnt try to max it out)

    Now... at the end of last season on the very last ride of the year, I sucked up some debris in the river at the launch as i was putting it away. I thought it worked its way out of the pump though. I visually inspected the prop/wear ring and everything looks fine

    So what else could be causing this cavitation?

    I just want to get the thing working again so I can sell it....

    Please help


  2. #2
    Happily Self-Employed WFO's Avatar
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    On my 1200R, I had the stinger, battery box, electrical box, pump shoe,
    there is a cheezy felt seal on the back of the pump shoe that seals it to the transom plate... if you dont re-seal it there it will cavitate, big time

  3. #3
    dsw222's Avatar
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    Quote Originally Posted by WFO View Post
    there is a cheezy felt seal on the back of the pump shoe that seals it to the transom plate... if you dont re-seal it there it will cavitate, big time
    I completely forgot to put one of those on

    Sounds like that could be my problem! I'm an idiot. I have 4 of them sitting in my garage that I ordered as extras cause they were so cheap too. I'll toss one on over the weekend.

    Thanks Rich!!!

  4. #4
    "just sayin".. jetdave56's Avatar
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    Quote Originally Posted by WFO View Post
    there is a cheezy felt seal on the back of the pump shoe that seals it to the transom plate... if you dont re-seal it there it will cavitate, big time
    I thought most GPR owners remove the felt and replace that area with 5200 or marine silicone and go over and around the Riva black plastic insert....my felt just came off and I 5200 that area... its been holding well,no cavitation whats so ever...will I have problems?Name:  trans shoe.jpg
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  5. #5
    Happily Self-Employed WFO's Avatar
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    yes, we usually chunk that felt seal and seal the shoe with 5200 fast cure or equal sealant

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