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  1. #1
    freedom04's Avatar
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    drive shaft play

    hey guys,
    it's starting to get warm here in jersey, i decided to hook it up to the hose, everything runs awesome, no leaks nothing. but i noticed a pretty loud rattle noise while idling, and i can see the drive shaft moving a LITTLE while running, i mean like forward and back, is the drive shaft supposed to have a small amount of play back and forth?

    Thanks


  2. #2
    freedom04's Avatar
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    i heard the rattle is popular for polaris ski's?

  3. #3
    Click avatar for tech links/info K447's Avatar
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    Quote Originally Posted by freedom04 View Post
    i heard the rattle is popular for polaris ski's?
    Impeller and driveline rattle sound is common with Polaris jet pumps when run on the trailer, out of the water. Especially with the non-MSX models.

    In the water there should be no rattle at all.

  4. #4
    freedom04's Avatar
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    Quote Originally Posted by K447 View Post
    Impeller and driveline rattle sound is common with Polaris jet pumps when run on the trailer, out of the water. Especially with the non-MSX models.

    In the water there should be no rattle at all.

    Thanks a lot Keith.
    i plan on launching it this comming tuesday when it turns 83 degrees. do you have any input on if the drive shaft should be moving back and forth a little bit while running?

    Thanks

  5. #5
    Click avatar for tech links/info K447's Avatar
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    Quote Originally Posted by freedom04 View Post
    ... if the drive shaft should be moving back and forth a little bit while running?

    ...
    IIRC, the specification is 0.1" to 0.2" of play end to end for an installed driveshaft. There needs to be a little room for movement as the engine will shift and flex as you ride, and the hull also has some flex on the water.

    I presume you have verified there is a rubber bumper on each end of the driveshaft, correct?

  6. #6
    freedom04's Avatar
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    Quote Originally Posted by K447 View Post
    IIRC, the specification is 0.1" to 0.2" of play end to end for an installed driveshaft. There needs to be a little room for movement as the engine will shift and flex as you ride, and the hull also has some flex on the water.

    I presume you have verified there is a rubber bumper on each end of the driveshaft, correct?
    yes that is about how much it is moving, it only moves very little while i hit the throttle.

    And yes i actually ordered brand new OEM Polaris rubber bumper(s) and 1 O-Ring, that slips into the impeller. because mine were pretty eaten up.

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