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  1. #1

    Join Date
    Aug 2011
    Posts
    1
    Location
    Massachusetts
    Mower
    John Deere

    John Deere L120 issues

    Hi all,
    I ahve an L120 which once it heats up (10 mins or so) starts to surge and seems as though it is starving for fuel or air. If mower is engaged it will stall. It will also backfire. Some people have suggested coil. Thanks in advance for your answers.
    Best Regards,
    Bob

  2.  

  3. #2

    2,500 Post Club

    Join Date
    May 2010
    Posts
    2,541
    Location
    Illinois
    Mower
    kioti/rhino finish mower

    Re: John Deere L120 issues

    Have seen issues with some of the briggs twins with the plastic intake manifold warping when it gets hot causing an air leak between the carb and the intake manifold. some have the plastic and others have an aluminum intake so that may not be it.

    Have also seen the fuel pump quit pumping fuel after they run for a few minutes
    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.
    Warranty service for MTD, Murray, Powerwasher, Karcher, Mcculloch, Earthwise, Earthquake, Yamaha engines, Hisun, American Sportsworks, Worx, Rockwell Tools, Great Lakes Technologies products(Wen, CZ), Efco, Snap-On pressure washers, and others.

  4. #3

    Join Date
    Oct 2010
    Posts
    500
    Location
    Kentucky
    Mower
    2000 John Deere 335, 2009 John Deere LA175, 2010 John Deere 3038E

    Re: John Deere L120 issues

    I just replaced one of the ignition coils on my dad's L120 last month. It would run fine for a little while, then start popping out of the exhaust.

  5. #4

    Join Date
    Jun 2013
    Posts
    4
    Location
    New Jersey
    Mower
    Scotts

    Re: John Deere L120 issues/Scotts 2048

    I am having a similar problem with my Intek 20HP POS, 406777-0128-E1, 370 hours. After rebuilding the carb I noticed on reassembly that the PLASTIC intake manifold was warped at the carb mount. I have ordered a new manifold so I can't confirm that this was the problem.
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