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  1. #11
    LD1
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    Kubota l3400

    Default Re: chainsaw quits

    Can you get any pics of the piston with the muffler off??

    If it is indeed the issue, with it being a MS290, if it isnt under warranty, it probabally aint worth fixing. But you might get lucky, if the cylinder isnt hurt and it just needs a piston and ring, it might be worth fixing IF you can do it yourself. A piston and ring kit is usually around $50. But if you need the cylinder, it goes north of $100 quickly for a good one.
    ".........there is only one way to find out."
    "Ok, hold my beer and watch this.........."


    Ford 5500 Backhoe
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  2. #12
    Platinum Member xyz123's Avatar
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    none now

    Default Re: chainsaw quits

    Quote Originally Posted by rvhop View Post
    I took the muffler off, i think the piston looks o k, but the crankshaft does make a full revolution. The piston moves up and down, but at a certain point it locks up. I believe its had it. Again thanks to all you guys for your help,
    WAG time. Did your coil come loose and hitting flywheel? I fixed one the other day that did this.
    REDNECK Chainsaw Repair

  3. #13
    Elite Member
    Join Date
    Dec 2003
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    3,960
    Location
    NC
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    Kubota Grand L3830

    Default Re: chainsaw quits

    Take the new plug you said you installed out and see if the engine will rotate. Sounds like you put a plug with too long of a reach or tip in the saw. You could also have a large piece of carbon that has broken loose and is now jamming against the top of the piston. If the engine will rotate take the old plug with you and buy a new one. Remove the filter and squirt a small tablespoon of gas through the throat of the carb directly into the combustion chamber and immediatley try to start. Also place a paper towel on the muffler and see id you can blow through it. A clogged muffler will prevent the engine from starting or running. Also most two strokes want a muffler installed before they will start and run.

  4. #14
    New Member
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    Feb 2005
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    13
    Location
    Central, Al.
    Tractor
    1975 Ford 4000, 1953 Ford Jubilee

    Default Re: chainsaw quits

    The coil is attached good. I took the plug out and the flywheel only rotates about 180 degrees. The piston moves freely up and down. I believe the crankshaft has a bad bearing.

  5. #15
    LD1
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    Default Re: chainsaw quits

    Is their any signs of the coil coming into contact with the flywheel?
    ".........there is only one way to find out."
    "Ok, hold my beer and watch this.........."


    Ford 5500 Backhoe
    Kubota L3400GST W/LA463 FEL
    2005 Dodge 3500 4x4 Diesel
    8N Rebuilt and restored
    Bushhog 306
    3 Homemade wood hauling trailers
    Dolmar 6400 84cc ported
    Sachs-Dolmar 120SI Ported
    (4) Sachs-Dolmar 116SI Ported
    Dolmar PS540
    Sachs-Dolmar 115i
    Sachs-Dolmar 117
    Sachs-Dolmar 112

  6. #16
    New Member
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    Feb 2005
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    13
    Location
    Central, Al.
    Tractor
    1975 Ford 4000, 1953 Ford Jubilee

    Default Re: chainsaw quits

    No the flywheel and the coil have the right spacing between them.

  7. #17
    LD1
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    Default Re: chainsaw quits

    Sounds to me like its time for an exploratory tear-down
    ".........there is only one way to find out."
    "Ok, hold my beer and watch this.........."


    Ford 5500 Backhoe
    Kubota L3400GST W/LA463 FEL
    2005 Dodge 3500 4x4 Diesel
    8N Rebuilt and restored
    Bushhog 306
    3 Homemade wood hauling trailers
    Dolmar 6400 84cc ported
    Sachs-Dolmar 120SI Ported
    (4) Sachs-Dolmar 116SI Ported
    Dolmar PS540
    Sachs-Dolmar 115i
    Sachs-Dolmar 117
    Sachs-Dolmar 112

  8. #18
    New Member
    Join Date
    Nov 2012
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    9
    Location
    frenchville.pa
    Tractor
    JOHNDEERE B

    Default Re: chainsaw quits

    CONNECTION ROD BOLTS COM LOOSE IT HAPPENED TO ME ON A SMALL HUSQVARNA

  9. #19
    Platinum Member CobyRupert's Avatar
    Join Date
    Oct 2012
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    673
    Location
    Washington County, NY
    Tractor
    JD 5075E

    Default Re: chainsaw quits

    How do you get good spark if the crankshaft doesn't make a full revolution?

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