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  1. #1

    Join Date
    Jul 2012
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    Pics of first ski and a little help?

    Hey all, picked up my first ski today, a used 1999 Yamaha GP1200. The guy told me this had the Riva package and I'm looking for some help identifying what I have...

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    So is this the motor with the Powervalves? The plate on the side of the motor says 65U. It is not running right now, it's been sitting about 2 years with stale gas. It turns over just fine on the battery. The previous owner said it would run with ether shot down the carbs and then die. So I'm planning on rebuilding all three of the carbs. Anything else I should get at while I have things apart? I'm mainly interested in getting the ski running and in the water and I'll worry about the go-fast goodies later on. Thanks for all the help!


  2. #2
    also replace the needle and seat when you do the carbs, theyre not included in a rebuild kit. i believe yours are 1.5

    while theyre off check or replace your pulse lines

  3. #3
    65u is a non powervalve motor.

  4. #4
    Yamaha artisan Cutlass's Avatar
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    Looks like a bone stock 99 GP1200 to me. Take some pics of the ride plate and intake grate.

  5. #5
    Yamaha artisan Cutlass's Avatar
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    Quote Originally Posted by imsobored152 View Post
    also replace the needle and seat when you do the carbs, theyre not included in a rebuild kit. i believe yours are 1.5

    while theyre off check or replace your pulse lines
    Stock is 1.2 but most people go to 1.5. Just gotta make sure the pop off pressure is correct when changing needle/seat size

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