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I have a Jacobsen Homlite 420 Electric snowthrower UT35020 that spurts gas out the thumb primer while priming and running. I have replaced the button but it still spurts gas out the primer button when running

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  • nbkaz0037 Oct 04, 2010

    have a Jacobsen Homlite 420 Electric snowthrower UT35020 that spurts gas out the thumb primer while priming and running. I have replaced the button but it still spurts gas out the primer button when running

    This was answer received from fixya:
    usually the button is not the cause of the spurting gas. When a button start to spurt gas the replacement should not be the button but normally there is a seal below the button which is supposed to be replaced instead. When the seal is broken even after replacing the button the gas leak will still happen therefore making the replacement redundant. Replace the seal and the leakage will stop.
    Hope this solution has been helpful?

    there is nothing on the line, and it goes directly in the carborator from the thumb (primer) pump.

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Usually the button is not the cause of the spurting gas. When a button start to spurt gas the replacement should not be the button but normally there is a seal below the button which is supposed to be replaced instead. When the seal is broken even after replacing the button the gas leak will still happen therefore making the replacement redundant. Replace the seal and the leakage will stop.
Hope this solution has been helpful?

Posted on Oct 03, 2010

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Some buttons do have a seal while others do not. The soft primer bulb is actually what seals the fuel and keeps it from leaking. At this point, the bulb was already replaced, and I assume it was centered before tightening. There is a hose that runs to the bulb, and could alos be a cause for leaking. There really is much left to suspect for a cause.

Posted on Oct 04, 2010

  • shilo schneider Jan 30, 2012

    The Jacobsen 320 and 420 snow blowers use a "wet" primer bulb - it is designed to pump gas - not air. If you are trying to use a primer with a hole in it - it is the WRONG primer.

    If you still need a WET primer - email me and I will tell you where to get one for around $10 - basscatt at hotmail dot com

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