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    Eberhardt's Avatar
    Eberhardt Posts: 1, Reputation: 1
    New Member
     
    #1

    Sep 19, 2007, 11:45 AM
    Black soot on the spark plug,is it the plug.
    My lawn mower plug has black soot on it, what could be the cause of the plug fouling out? It is a 6.0 B&S motor, also is there a certain gap for the plug and if so what is it? This problem just recently came up after 3 years of use and I don't understand what happen.:confused:
    MOWERMAN2468's Avatar
    MOWERMAN2468 Posts: 3,214, Reputation: 243
    Ultra Member
     
    #2

    Sep 19, 2007, 06:25 PM
    Too rich of fuel mixture. . 030" gap.

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