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-   -   Briggs & Stratton 20 hp Twin II (https://www.askmehelpdesk.com/showthread.php?t=379124)

  • Jul 23, 2009, 06:52 PM
    wlzfish
    Briggs & Stratton 20 hp Twin II
    Thank you. Mower runs about 15 minutes then dies, then backfires really loud. It won't start up again until the next day. Thank you for your help. Wandas
  • Jul 23, 2009, 09:25 PM
    crigby

    Hi,
    Time for a new ignition, Briggs calls them armatures. One does both sides, both plugs fire whether they are making power or not.
    Peace,
    Clarke
  • May 31, 2011, 07:22 AM
    fwfmfw
    Replace the in line fuel filter, mine plugged up and did same thing, was not 100% plugged so would run, slow, choke it and go etc, Filter only about three bucks, but sounds like what mine did

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