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  1. #1

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    STX-R Leaking - Your opinion as to how to fix it

    Hey guys,

    I just picked up an STX-R that is taking on water. I initially thought it was leaking at the rear seal/bearing drive support. However, it turns out to be where the shaft goes through the aluminum housing that is glued to the hull(see pic).

    Click image for larger version. 

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    My question is, has anyone ever had a similar problem as this? What is the best way to fix this? Try to remove the old stuff or just add on? Also, what kind of sealant should I use?

    I've replaced the bearing supports in my Ultras but this is the first time I ever saw it leak through this. Starting to question if I should have taken this project on.

    Thanks for any help.


  2. #2
    1200 stx-r's Avatar
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    Heat gun -remove old sealant- clean/inspect/scuff area then re seal

  3. #3

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    Thanks for the help man. What should I re-seal it with? Have you ever seen this happen before?

  4. #4
    This is how I run a jetski shop in the desert nmpeter's Avatar
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    my vote is for using permatex "right stuff"..with some half assed prep you should be good for a season or two..a full cleanup is a best practice repair however.

    odd place for a leak..did you check the underside of the hull?

  5. #5
    big john's Avatar
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    just had to do the same thing to a 2000 ultra 150, i ground the hull and fitting clean, used acetone to degrease everything and used 5200 to glue it back in place, the ski had broke all three motor mounts and also ripped the rear shelf out as well, i let it sit a week and its rock solid !!!!!

  6. #6
    Leak happens there on two occasions:
    1. Engine to Pump alignment is out and excessive vibration causes the brownish 'bondo' to unglue or seperate.
    2. When a rope gets wrapped around the drive shaft, the aluminum shaft tunnel piece gets pushed up by the 'fattened' drive shaft and lifts up the 'bondo'.

  7. #7
    cconigliaro's Avatar
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    Been there a few times before. Wave jumping pushes those out as well.

    1) Remove all the old epoxy.
    2) Seal it back up with 3M 5200 permanent marine silicone
    3) Lay some fiberglass cloth over it and glass it in.

    You will never again have an issue. You will never have a need to remove that piece as Kawasaki doesn't sell it seperate from the hull.

  8. #8

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    Thanks for the help guys. I'll get to work on it tonight and let you know how it goes.

    Thanks again.
    Rob

  9. #9

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    Update for you guys.

    The aluminum housing came right off with the sealer. I guess this means this was definitely the source of water entering the hull.
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  11. #10
    Spooling's Avatar
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    While You're at it:

    Since you have currently "dug-in" this far, for less than a hundred bucks, you may wanna consider changing the driveshaft seal.

    That proved to be a source of the leak for my Ultra-150 and there were many STX-r skis that also had this issue as well.

    I also purchased a new housing with the new bearings and seals and pressed them in myself.

    I purchased my stuff from promarineusa.com - yet they can be had from here also:

    http://www.atlanticjetsports.com/bearing_housing.htm
    ----------------
    Reference this thread here:

    http://www.greenhulk.net/forums/show...=176440&page=3
    ----------------

    Here's a couple more threads from the other site that may be useful for you:

    http://ultra150.yuku.com/topic/4195/Is-it-Necessary

    http://ultra150.yuku.com/reply/24800...do#reply-24800

    Good Luck !!!

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