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Thread: engine coupling

  1. #1

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    Question engine coupling

    I need to replace the engine coupling on my 94 Sl 750. Can and How is this done with the motor in the Hull? Their is no way of holding back on the crank to unscrew the coupling without at least taking 1 cylinder off


  2. #2
    Lake Mead Bum & BTLS Mark starflight's Avatar
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    Hey Joe, try inserting some rope in the pto cylinder through the sp plug hole. Just make sure the rope doesn't go into any of the cylinder ports. Then spin the coupler ccw w/ a big wrench. Heating the coupler may help also.

  3. #3

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    how will i know if its not in the ports? what does the rope do? Does it fill the head so the piston has something to push on?

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    Eric, did you get your paypal?

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    Lake Mead Bum & BTLS Mark starflight's Avatar
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    Quote Originally Posted by jmule98 View Post
    how will i know if its not in the ports? what does the rope do? Does it fill the head so the piston has something to push on?
    Bring the piston up to almost tdc,( all ports closed) and push the rope in.
    Yes it takes up space to stop the piston/ crank.

  6. #6
    Lake Mead Bum & BTLS Mark starflight's Avatar
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    Quote Originally Posted by jmule98 View Post
    Eric, did you get your paypal?
    Yes I did. Thanks!

  7. #7

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    Quote Originally Posted by jmule98 View Post
    how will i know if its not in the ports? what does the rope do? Does it fill the head so the piston has something to push on?

    Make sure you put the rope in the rear cylinder !!!!!!!!

  8. #8
    SPEED KILLS, BUT YOU GET THERE QUICKER Keddano's Avatar
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    As said...make sure it's in the rear cyl. the Polaris crank is pressed together,so any where else will twist the crank out of PHASE. Meaning out of Alinement.

  9. #9

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    Thanks for the infos greatly appreciated

  10. #10
    Lake Mead Bum & BTLS Mark starflight's Avatar
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    Did ya get it off?

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