question about 750's crank case and the drain
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  1. #1
    I dream skis mopar9012's Avatar
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    question about 750's crank case and the drain

    I have a 94SS and a 93 SS/XI
    On the SS me and my uncle pulled the crank case drain thinking the stupid thing was a fuel line primer(we were having trouble with the carb pulling gas) well that was a dumb idea. I then had to buy the crank case block off kit because the ski would just rev like crazy.

    anyways I just bought the 93SS/Xi. Cylinders both read 150psi and right now it runs good and I went ahead and installed the oil block off kit. Doesnt apear to have any air leaks anywhere BUT it does still have the drain installed. So my question is, should I fix what isnt broken?
    I read one post where someone said the seal my just open while riding one day and cause the ski to run lean and the engine will go? Normally id just go ahead and do it but it was kind of a PITA to do it on the 94 with the engine still in the hull. I mean its doable, but what do you all think, fix what isnt broken or leave it be?
    1993 Kawasaki 750ss xi
    1994 750ss--- project ski

  2. #2
    PWCToday.com Is My Home Away From Home john zigler's Avatar
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    Re: question about 750's crank case and the drain

    IMO it is good preventative maintenance.

    cheaper, and easier to do now, than after a motor rebuild....
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  3. #3
    I dream skis mopar9012's Avatar
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    Re: question about 750's crank case and the drain

    so you believe that theres a real chance it could come loose while riding causing the engine to run lean?
    1993 Kawasaki 750ss xi
    1994 750ss--- project ski

  4. #4
    PWCToday.com Is My Home Away From Home BLRider's Avatar
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    Re: question about 750's crank case and the drain

    Quote Originally Posted by mopar9012 View Post
    so you believe that theres a real chance it could come loose while riding causing the engine to run lean?
    .

    Yes, that is exactly what will happen. The rubber plug may not come loose but the rubber can crack with age causing the same problem.
    Never argue with an idiot, they will drag you down to their level then beat you with experience.

  5. #5
    PWCToday.com Is My Home Away From Home PrickofMisery's Avatar
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    Re: question about 750's crank case and the drain

    It may be a PITA to install, but its a cake walk compared to the work and money involved in a rebuild.

  6. #6
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    Re: question about 750's crank case and the drain

    I pull and block off the crank vent and oil pump on EVERY (kawi 650/750) jetski I own.

  7. #7
    PWCToday Guru
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    Re: question about 750's crank case and the drain

    when these crank case drains go bad, does it sound like a hissing or puff is coming from it?

    in a nut shell i have an ssxi that wants to start but wont, and after about 3 or 4 mins of cranking it back fires out the rear exhaust outlet....

    while cranking on the ski, once about every thirty seconds we hear a hissing almost like a super charger/turbo shound coming from that general area under neath the exhaust manifold!

    ANY HELP ON INSIGHT WOULD BE GREATLY APPRECIATED

    all my other 750s have the crank case drain installed but if this is a symptom of a faulty/failed one it will be my first experiance

  8. #8
    Attention ***** PWCToday.com Is My Home Away From Home JonnyX2's Avatar
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    Re: question about 750's crank case and the drain

    Just remove it and install a block off kit or tap the two holes and install some ss bolts with red loctite. We did this with all the kawasaki skis. Good insurance ��
    Quote Originally Posted by Firebird A/C&Heating View Post
    OMG.....Rules for 550 vintage ski class...550 ski riders do not conform to any kind of rules. That is why you are riding a 550 ski in the first place. Rules suck....
    PS...the rule book will be in my 550 pump
    Quote Originally Posted by WB1994
    Listen , stop your cryin' , its only an X2.

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