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not enough gas? too much air?

Discussion in 'Mechanic and Repair' started by kcowell, Apr 6, 2005.

  1. kcowell

    kcowell LawnSite Member
    Messages: 41

    My walkbehind is starting right up wiht a few pushes of the prime and one pull, but soon chokes out and dies. I've found if I continually push the prime button, it will stay running. As soon as I stop, it stops running. Does this mean it's not getting enough gas?

    Also, if I take the air filter off and place my thumb over half of it, it will stay running. So, it's getting too much air? Not enough gas? Wierd.

    I just had a tune up and have only mowed twice since. I'm definitely taking it back to get checked at no charge to me, but just curious what you thought.
  2. barnard

    barnard LawnSite Senior Member
    Messages: 618

    You've got a partially obstructed main jet in the carb.
  3. Smalltimer1

    Smalltimer1 LawnSite Bronze Member
    Messages: 1,223

    Sounds like your carburetor needs to be rebuilt.
  4. KathysLGC

    KathysLGC LawnSite Bronze Member
    Messages: 1,345

    Sounds like not enough gas. Was it doing this prior to the tune up? Check the plugs and make sure they are the correct ones and gapped to your engines specs. How did you store the mower over the winter? With gas in it?

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