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  1. #1

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    MSX 140 would not turn off

    I have a 2003 Polaris Msx 140, and my engine on my ski would not turn off on Sunday. Both the stop switch and the lanyard did not turn it off. Any ideas how this could happen? I just had the solenoid and starter replaced last week. Ski worked fine all weekend.
    Last edited by K447; 08-26-2012 at 10:26 PM.


  2. #2

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    After reading through some old posts it is probably the LR-503 right?

  3. #3
    jackofalltrades's Avatar
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    Quote Originally Posted by Splendidchef View Post
    After reading through some old posts it is probably the LR-503 right?
    I would bet that the start/stop module is bad. Cheers.

  4. #4

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    Is that part #4010906?

  5. #5
    jackofalltrades's Avatar
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    Should be however check out the parts sources here http://polarispwcknowledge.shorturl....-parts-sources and verify before buying. That LR-503 part number is the updated one that came out in 04 but it should work on your ski but check to make sure. Cheers.

  6. #6

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    Thank you sir!

  7. #7

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    I cannot find a LR-503 on the MSX 140. Can someone tell me where it is?

  8. #8

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    right by the battery stuck in the foam.its black 5 or 6 wires to it.1.5 x 2 inches

  9. #9

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    Why can I not find that part when I look at the electrical diagrams to order it? Someone told me that the EMM controls the kill function. I am sure hoping that is not the case. PLEASE HELP! I just sunk $700 dollars into this ski last week with a new starter!

  10. #10
    jackofalltrades's Avatar
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    Quote Originally Posted by Splendidchef View Post
    Why can I not find that part when I look at the electrical diagrams to order it? Someone told me that the EMM controls the kill function. I am sure hoping that is not the case. PLEASE HELP! I just sunk $700 dollars into this ski last week with a new starter!

    Hummmm, I assumed that the MSX 140 was the same but I think you are correct. I just reviewed the wiring diagram in the service manual and its not there. It appears that there is an EMM input to kill the engine. I would call DFI technologies and see what they have to say.

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