JS550 throwing sparks between starter and flywheel
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  1. #1
    PWCToday Newbie
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    Angry JS550 throwing sparks between starter and flywheel

    So my 88 js550 is throwing sparks between the starter and the flywheel. Iím somewhat new to these machines. Iíve tried a different starter am it still does the same thing. As soon as the starter connects to the flywheel, it throws tons of sparks. It looks like electric sparks, not like theyíre grinding together. Anything will help

  2. #2
    PWCToday.com Is My Home Away From Home
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    Re: JS550 throwing sparks between starter and flywheel

    Some amount of sparks are normal from almost any starter -- if it is not a sealed type. But most skis have sealed ones. Are the sparks coming from the inside of the starter or outside? If it is outside then it is very likely that you have bad connections that go to the starter. Disconnect the cable from the battery negative terminal. Remove the red cable that goes from the starter to the starter solenoid. Inspect and clean the surfaces on the starter that it connects to and both ends of the cable. You may also need to remove the starter to clean the surface where the starter grounds against the engine block.
    Riding mostly Lake Austin

    1984 JS440 -- 1989 650sx -- 1991 X2 -- 1992 750sx -- 1995 900zxi (qty 2) -- 1995 X2

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  3. #3
    PWCToday.com Is My Home Away From Home john zigler's Avatar
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    Re: JS550 throwing sparks between starter and flywheel

    Cheap / Bad starter(s)
    RCJS also doing business as WATCON
    608-743-1305 9am to 5pm CST m-f
    email watcon@watcon.com

    Please visit our web sites

    new parts / products / services www.watcon.com
    used parts www.rockcountyjetski.webs.com
    thank you

    Please check out and like WATCON on Facebook

  4. #4
    PWCToday Newbie
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    Re: JS550 throwing sparks between starter and flywheel

    Thank you for the replies! I’ll try that and see what happens

  5. #5
    PWCToday.com Is My Home Away From Home Myself's Avatar
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    Re: JS550 throwing sparks between starter and flywheel

    I think I have a good oem one here.
    http://www.facebook.com/twinlakesjetskirepair

    '89 Kawi 650SX 42.4 GPS
    +3" stock pipe, ported ex. manifold, drilled waterbox, blueprinted pump, Ocean Pro ride plate

    '99 Yama GP1200 65U 61.8 GPS
    ported cylinders, matched cases, milled head, blueprinted pump, long ride plate

    '96 Seadoo HX 717 53.13 GPS
    light porting, massaged cases, lightened flywheel, port matched manifolds, Rossier pipe, stubby pump cone

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