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Mower will start fine, but wont stay running

Discussion in 'Mechanic and Repair' started by ZaK18, Jan 26, 2007.

  1. ZaK18

    ZaK18 LawnSite Member
    Messages: 188

    I purchase a used 21" toro personal pase as a backup mower...The mower will start just fine when primed, but after a few seconds it dies...the guy I bought it from said it was working fine in the fall, and said it was bad gas, so I went ahead and purchased it...well, I replaced the gas and its still having the same problem, Its got a new air filter and sparkplug.

    Any ideas of what could be causing this?
  2. mojob

    mojob LawnSite Senior Member
    Messages: 515

    I don't know what type of carb it has but it sounds like it's not getting any gas through the primarary jet. It's starting because you're priming it. This manually squirts gas into the engine causing a rich enough mixture to support combustion. The piston moving through the cylinder will then take over and pull fuel through the carb if everything is working correctly. Depending what type of carb you have, you'll have to replace a diaphram and/or clean the jet in the carb. Order a carb repair kit for it.
  3. lawns Etc

    lawns Etc LawnSite Silver Member
    Messages: 2,277

    That sounds like good advice I would take the bowl off the carb and give a good cleaning first and try, if the gas had ethanol and no stabilizer the carb could be gummed up
  4. ZaK18

    ZaK18 LawnSite Member
    Messages: 188

    Thanks for the help :waving: I will clean the bowl and jet and see if thats whats causing it ...Thanks again
  5. Dirt Digger2

    Dirt Digger2 LawnSite Silver Member
    from PA
    Messages: 2,396

    check/clean the fuel lines too...if it keeps shutting off it probably means its starving for fuel and if the lines are clogged it isn't getting the fuel it needs
  6. J&R Landscaping

    J&R Landscaping LawnSite Fanatic
    Messages: 5,095

    Is it a Tecumseh engine or Briggs engine. The tecumseh engines have had feul cap recalls. I would do what the above people said, cleaning the mani jet should solve your problem..... let us know!!

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