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Thread: 1997 seadoo xp

  1. #1
    PWCToday Regular
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    1997 seadoo xp

    Hi, looking at buying a '97 xp.
    Probably look at this weekend, all go well coming home with. Have a few ??
    Will check compression an water test an
    Replace gray fuel lines, carbs rebuild, pump oil.
    Fuel gauge doesn't work, any thing to check specifically with the 800 engine or the ski?
    What should compression be?
    Got him to $1200.. no trailer just ski.
    Any thoughts, price to high?
    Thanks

  2. #2
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    Re: 1997 seadoo xp

    Good price, only use genuine Mikuni parts and also be sure to change the Needle/Seats with genuine Mikuni, pressure test the carbs for gasket leakage and check that the bypass holes are clear of debris, change out the fuel selector and water separator bowl o-ring, be sure to pressure test the jet pump after re-assembly for leaks, check end threads on the impeller shaft for wear as well as measuring the run out on it where the bearings contact it, fuel gauge doesnít work because the fuel gauge float might be saturated with fuel, compression should be about 150 psi, check for excessive smoke and a high idle (3,000rpm on the trailer & 1,500 rpm in the water) upon start up, check the wear ring, pump vanes and impeller condition, check for any water leaks coming from any of the 4 exhaust pipe welsh plugs(casting plugs welded onto the pipe) & carbon ring condition as well as the rubber bellow with the 2 worm clamps from the carbon ring that is on the driveshaft & the 787 Motor is a solid performer!




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  3. #3
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    Re: 1997 seadoo xp

    Alright, thanks. Will check it over good!!
    What should be the lowest allowed compression.. 140?
    Anything to check on the rave valves.. no experience with em. Just rotary valve on 657..

  4. #4
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    Re: 1997 seadoo xp

    The RAVES can be checked by pushing in on the top of it w/o removing anything and should move up & down freely w/o sticking or hanging up. If removing the RAVES. They probably will need the carbon build up removed even if they move freely. If they have been upgraded. They will have a line/slot cut into the left and right side of the valve.

    Lowest compression Iím comfy with on a 787 Motor is 135 psi with a difference of 3 psi between each cylinder and a minimum of 3 compression tests with a cold engine and the throttle pinned wide open.


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