20″ push mower will fire when primed but then dies, what can I do to fix it, and why does it do it?

the mowers only 4 months old

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3 Responses to “20″ push mower will fire when primed but then dies, what can I do to fix it, and why does it do it?”
  1. Spock says:
    May 30, 2009 at 12:49 am

    Clean/replace the air filter. Fresh gas. Spark plug.

  2. Addy M says:
    May 30, 2009 at 12:49 am

    small engines have a carburetor. It probably sticks and lets too much air in with the gas. Check the manual choke. Four months means it is still under warrantee so take it back and get them to check it. Find out exactly what the problem is for future reference.
    I sure hope it isn't a craftsman. They may reccommend replacing the engine. DON"T LETUM

  3. daveduncan40 says:
    May 30, 2009 at 12:49 am

    Will it run if you remove the air filter? If so then you can simply clean the filter. Often dust gets lodged in it and hinders air flow to the engine.

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