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    rocc49's Avatar
    rocc49 Posts: 2, Reputation: 1
    New Member
    		  
    #1

    Jul 22, 2010, 03:35 PM
    Lawn tractor starting problem
    OK Mr. and Ms. know-it-all's. A friend gave me a Sears Craftsman Lawn tractor which has NOT been running for years. When I try to start it, the motor makes about a half turn. When I leave the spark plug OUT, the motor will spin like it is supposed to. Put the plug back in and the motor will not turn.
    crigby's Avatar
    crigby Posts: 4,343, Reputation: 107
    Outdoor Power Equipment Expert
    		  
    #2

    Jul 22, 2010, 05:51 PM

    Hi,
    The symptoms youdescribe are usually attributable to valve timing out of adjustment. If it is a Briggs OHV, then the YouTube video may be instructional. Setting is 0.004-0.006" and the video is here:
    YouTube - Lawn Mower Repair Valve Adjustment
    Peace,
    Clarke
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