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briggsandstratton 3.5 hp carburetor

Discussion in 'Mechanic and Repair' started by huskvarna, Sep 15, 2005.

  1. huskvarna

    huskvarna LawnSite Member
    Messages: 1

    It starts and runs for very short time then quits.
    Have cleaned carb. and blew out the jets.
    Any comments?
  2. Restrorob

    Restrorob LawnSite Fanatic
    Messages: 11,029

    Does it start right back up when it quits ? Does it have spark after it quits ?
    About how much time in minutes does it run before it quits ?
    Post the model and type numbers off the recoil housing.
  3. sildoc

    sildoc LawnSite Silver Member
    Messages: 2,925

    Had the same problem with my 3.5hp briggs. Let me guess is it a horizontal shaft? I ended up having to buy a new carb to the tune of 130.00. runs like a top now. If you can change it out to the newer briggs motor. Cost is under 200 for non gear reduct model and 295 for the 6:1 gear reduct model. I couldnt fit it in my aerator so had to spend the money on the new carb.
    Also check the needle valve. sometimes a piece of carbon will clog it. Be very carefull with the needle if it is tightened to tight you will need a whole new one maybe even a whole new carb.

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