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    ggil952's Avatar
    ggil952 Posts: 1, Reputation: 1
    New Member
    		  
    #1

    May 16, 2009, 07:23 AM
    Briggs Vanguard sputters
    My 17 hp briggs mower starts right up and idles fine. As soon as I engage the blades it starts to sputter and bog down. However, if I let the engine idled for 4-5 minutes first I do not get the sputtering? Once its warmed up it mows fine.
    rugged69's Avatar
    rugged69 Posts: 1, Reputation: 1
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    #2

    Sep 27, 2009, 09:26 AM

    New to web site just to let you know most small 4 stroke engine require a little warm up time before putting them to work... try to let it warm up before use just so all the oil has a chance to work its way around the engine. Also might be time for a oil change
    crigby's Avatar
    crigby Posts: 4,343, Reputation: 107
    Outdoor Power Equipment Expert
    		  
    #3

    Sep 27, 2009, 11:06 AM

    Hi,
    I agree with the "warm up" but would add that most engines should perform well with little or no warming period if fully functional. I would suggest an additive to your fuel as the best guess is that you have some minimal varnishing in your low speed circuit that makes it "act up" under load.
    Peace,
    Clarke
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