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1990-91 Jonsered 630 Chainsaw

My husband has had this chainsaw for years and has never had a real problem with it. The other day it started and ran well on full throttle but then would quit and when he tried to start again it just sputtered and won't start. He worked on it for about 4 hrs checking through his checklists but to no avail. He thinks he might need a carb kit. I suggested the oil mixture could be problem but the same mixture works fine in my little Jonsered saw that he bought me last xmas. What else could be the problem? Or could it be a carb kit.?Should he possibly check the exhaust system?
My email is fraggly66@yahoo.ca
sure would appreciate any input that help

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  • Anonymous Dec 07, 2008

    runs great for a short time when it is cold,then when you try to idle it stalls and will not restart.model 525

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I would try a spark plug first and second look at the muffler, sometimes the exhaust part of it gets clogged up and it can't "breathe"

Posted on Sep 09, 2008

  • David Ford
    David Ford Dec 09, 2008

    If it has set for a long period of time the gas could be stale and also the carb could be gummed to and not allow for proper operation. I bought a carb kit for my saw for about 20.00

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Check fuel line for breaks or cracks

Posted on Sep 10, 2008


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