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  1. #1

    Join Date
    Jun 2011
    Posts
    4
    Location
    South Carolina
    Mower
    Troy-Bilt

    Lawn Mower won't stay started

    I have a Troy-Bilt self-propelled 21" walk behind lawn mower (model #12A-446A711). It has a priming bulb which appears to be in good repair. It was purshased new, used several times, and then stored for 1.5-2 years. The priming bulb pulls air. But does not pull gas into the chamber. I emptied the gas, changed the oil, and tried to cut my lawn. If I pour a little gas into the carb, the mower will start. It runs for a second or two, then stops. I installed a new filter and a new main fuel line. I changed the spark plug and tried it again but same thing. Any ideas? Thank you. (It has a Briggs and Stratton motor)
    Last edited by Gnsgrashus; 06-06-2011 at 11:00 AM. Reason: Correct a small spelling error

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  3. #2

    1,000 Post Club
    Briana's Avatar
    Join Date
    Jul 2010
    Posts
    1,550
    Location
    California
    Mower
    Looking to Buy :)

    Re: Lawn Mower won't stay started

    Hey there! WELCOME to LawnMowerForum!

    I moved your thread to the Troy-Bilt Forum. You'll get a better response there.

  4. #3

    Join Date
    Jun 2011
    Posts
    4
    Location
    South Carolina
    Mower
    Troy-Bilt

    Re: Lawn Mower won't stay started

    Thanks!

  5. #4

    2,500 Post Club

    Join Date
    May 2010
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    2,557
    Location
    Illinois
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    kioti/rhino finish mower

    Re: Lawn Mower won't stay started

    I would say that the carb is gummed up with old gas and varnish.
    ILLINOIS ENGINE, BEECHER CITY, IL
    BRIGGS AND STRATTON MST (MASTER SERVICE TECHNICIAN)
    Sales and Service for Dolmar, Poulan, Briggs and Stratton, Kohler, Lauson(Tecumseh, LCT), Generac, Brute.
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  6. #5

    Join Date
    Jun 2011
    Posts
    4
    Location
    South Carolina
    Mower
    Troy-Bilt

    Re: Lawn Mower won't stay started

    Quote Originally Posted by ILENGINE View Post
    I would say that the carb is gummed up with old gas and varnish.
    Thank you. Could you please tell me where to find instructions to clean it?

  7. #6

    Join Date
    May 2010
    Posts
    5,446
    Location
    Kansas, Butler county, Just east of DooDah
    Mower
    CTL

    Re: Lawn Mower won't stay started

    Quote Originally Posted by Gnsgrashus View Post
    Thank you. Could you please tell me where to find instructions to clean it?
    Go to this site.. Small Engine Equipment Troubleshooting, Repairs and Safety
    scroll down till you see your carb... follow the instructions... easy to do, just take your time... KennyV

  8. #7

    Join Date
    Jun 2011
    Posts
    4
    Location
    South Carolina
    Mower
    Troy-Bilt

    Re: Lawn Mower won't stay started

    The carb had a lot of caked white powder. When I tried to clean it, there was a lot of pitting and the float was stuck. I replaced the caburetor with a new one (gasket too). Same result. Mower starts after priming, runs 5-10 seconds, then stops.

  9. #8

    Join Date
    May 2010
    Posts
    5,446
    Location
    Kansas, Butler county, Just east of DooDah
    Mower
    CTL

    Re: Lawn Mower won't stay started

    Get a can of starter fluid... See if it will keep running with starter fluid. OR see if it will continue running if you keep pushing the primer bulb... KennyV

  10. #9

    Join Date
    Mar 2012
    Posts
    1
    Location
    Georgia
    Mower
    Troy-Bilt

    Re: Lawn Mower won't stay started

    I have the same problem with my troy-bilt mower. Have cleaned carb, new air filter, new plug, new oil, new fuel lines, new bowl gasket. No improvement. If it sits for a couple of days, it will run for about a minute and stop like it is running out of gas. then you can prime it and it will start and then cut off again. This is so frustrating. It will keep running barely if you prime the bulb when you get it started.

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