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Magneto test

Discussion in 'Mechanic and Repair' started by Jerry Chabino, Sep 6, 2004.

  1. Jerry Chabino

    Jerry Chabino LawnSite Member
    Messages: 7

    Hey Guys,

    I am not getting any spark to my twin Briggs lawn tractor. Is there a way I can test the magneto? How far away from the flywheel should the magneto be?


  2. fixer67

    fixer67 LawnSite Silver Member
    Messages: 2,098

    The magneto is set at .010 to .012" from the flywheel. Most magnetos now days are solid state and can not be tested with out a lot of high tech gear. Mount the magneto and spin the engine is the best way to test. Remember to UNPLUG the kill wire on the magneto when testing. I have seen a lot of magnetos replaced needlessly because the problem was with the mower (bad wire or bad safety switch)
  3. Jerry Chabino

    Jerry Chabino LawnSite Member
    Messages: 7


    Tnx very much for the help. Did what U suggested for the test and replaced magneto. Works **** a champ !!

    Thanks again,


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