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    tugger22's Avatar
    tugger22 Posts: 2, Reputation: 1
    New Member
     
    #1

    Jan 26, 2010, 05:03 AM
    Askme briggs stratton
    I have a SEARS lawn tractor with a 15.5hp b&s model 28n707.
    It starts easy runs great until I engage the mower deck, then
    After 1 min great billowing clouds of whit/gray smoke from the
    Exhaust. If I disengage the load it stops smoking and run fine.
    ? is it valves, rings, govener, or what. I paid $200 for the mower
    Have I been clipped.?
    crigby's Avatar
    crigby Posts: 4,343, Reputation: 107
    Outdoor Power Equipment Expert
     
    #2

    Jan 26, 2010, 10:11 AM

    Hi,
    I would say to change the oil to a known good quality 30W to start with (filter too, if equipped) and see what happens.
    Look around the base of the head to see if there is evidence of a compression leak from the head gasket. Check the air filter area for evidence of oil entering through the crankcase breather. My guess is one of these areas is at fault if the problem continues after the oil change.
    Peace,
    Clarke

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