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    Bussee's Avatar
    Bussee Posts: 5, Reputation: 1
    New Member
    		  
    #1

    Apr 15, 2010, 06:20 AM
    Briggs and stratton
    Our neighbor has a Riding lawn tractor with a B/S engine... 28N707 type: 0150-01 code: 9409124A. The engine starts pretty good however after only 30 seconds - 1 min. the exhaust pipe becomes "red hot" WHY? In addition to that when he is ready to shut down the mower (idling it down) it backfires with a blue/yellow flame. Why??
    crigby's Avatar
    crigby Posts: 4,343, Reputation: 107
    Outdoor Power Equipment Expert
    		  
    #2

    Apr 16, 2010, 06:04 PM

    Hi,
    Air cooled engines get very hot. It could be that it has a little trash in the carb making it a bit lean or that it has a partially sheared flywheel key that has changed the timing a bit.
    Peace,
    Clarke
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