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  1. #1

    Join Date
    Jun 2012
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    Cairns, Queensland, Australia
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    Polaris MSX 140 2004 Rebuild

    Hello All

    I am starting to Rebuild/Repair my 2004 Polaris MSX 140. I will tell you a bit about its history, I brought it in 2008 with 100 hours on it and have enjoyed putting an extra 112 hours onto it
    but about 2 years ago i moved and have let the PWC sit. I was running it every month for about 6 months until my battery went flat so i pulled it out to charge it and upon refitting the
    battery i reversed the polarities and lost interest in my ski. I have now found new motivation to Rebuild/Repair my ski. i have purchased a new battery and upon refitting the battery
    making sure not to reverse the polarity again so i have tried seeing if my ski would kick over only to have nothing to happen. no cranking of the starter, no ticking sounds. the display works
    and i can scroll through the different modes. i will post some photos later on. can someone please let me know whats gone wrong?
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  2. #2

    Join Date
    Jun 2012
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    Cairns, Queensland, Australia
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    Corrosion on EMM

    Some more photos of the corrosion
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  3. #3
    urugol's Avatar
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    Nov 2009
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    Welcome to the hulk! That's a fine looking ski by the way

    Check your starter solenoid it's on the starboard side of the hull, before the harness gets to the battery. These suffer from corrosion and contacts can cause starting problems. Also check your grounding points, a quick way to check grounding of the engine is to run a 12v test lamp put the alligator clip side on the positive terminal of the battery and then touch the engine pretty much anywhere it should light up. Make sure that battery is fully charged too.

    This is what your solenoid should look like:
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  4. #4
    urugol's Avatar
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    That emm cooling port is pretty bad, well especially given its not there. you will need to re-tap another no way you can avoid that.

    When you mentioned reversing polarity - do you mean in literal form you allowed the battery to go completely dead and recharged it using the -ve as +ve and vice versa? That's pretty dangerous stuff, some pretty toxic gases can come out when you do that.

    Re-reading that its probably not corrosion you probably cooked the solenoid I would replace it for sure. You should be able to get one cheap enough from Jet Ski World or Jet Ski Parts up there on the GC.

  5. #5

    Join Date
    Jun 2012
    Location
    Cairns, Queensland, Australia
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    Hey Al

    no i didnt charge the battery the wrong way around. it was after it was fully charged and i put it back into the ski that i reversed the polarity. i have a starter relay on order so i will keep you posted once i hook it up to see if it will kick over.

  6. #6
    Click avatar for tech links/info, donation request K447's Avatar
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    Jul 2007
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    Check the few fuses that are hiding inside one or two of the splice connectors. The splice cover had a factory applied label listing the fuse amps.

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