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  1. #1

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    droped valve on a qk1390

    Can anyone tell me the best way to secure the valve back in the clynder. I was at the lake yesterday when the ski shut down on me. no comp on thrid piston. pulled the head and found the valve just floating around lose.


  2. #2
    XL1200Ltd-Keith's Avatar
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    Group K 1390

    If this is Harry Klemms 1390, he uses an allen head bolt and a washer to hold it in. I would find a stainless bolt and washer at the hardware store and use red loctite to secure it. I would also check the others.

    No compression? You might have other damage, pull the cylinder and post pics.

  3. #3
    OCFZR's Avatar
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    The power valves on the GK 1390 motor are locked into place by a bolt on the top on the valve rod. Check to make sure it did not fall out. GK drills and taps the valve rod so it can be bolted and locked into place.

  4. #4

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    valve

    There was 60lbs comp. no damage on the cylinder or piston that I can see. with tha valve lose in there like that wouldnt that show low com.

  5. #5
    YudLuz2's Avatar
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    If the valve drop down you would have more compression.
    You have lost that cylinder, time to pull it down.

  6. #6

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    pics

    Is this thing running way to rich.
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  7. #7
    lean!! and I'm not refering to picture # 3 butt thanks for sharing

  8. #8
    ZMAN is very correct. If you do a search on mixtures you will find the term piston wash that we all talk about. The actual piston wash is the rich mixture washing the carbon off of the top of the piston and making the piston look very clean.

    http://greenhulk.net/forums/showthre...ht=piston+wash

    take a peak at the above thread!

  9. #9

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    Thanks, gonna pull it apart and get a new piston.

  10. #10
    Well you've got 1 bad cylinder but the rear end is fine

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