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gas leaking through muffler??

Discussion in 'Lawn Mowing' started by fga, Jun 13, 2004.

  1. fga

    fga LawnSite Silver Member
    Messages: 2,449

    walk past my truck and smelled gas today. but not truck gas, an oil mix. so i looked at my mowers and noticed one of my lawnboys had a trickle of gas coming out of the front of the muffler, puddle on the deck, then a puddle in the truck. i tilted it forward to see if my fuel lines came loose, and gas poured out of the muffler. why and how the hell did that happen??? i let it drain out, then tried statring it. it took a few pulls, but started. any ideas on what this could be?
  2. dishboy

    dishboy LawnSite Fanatic
    from zone 6
    Messages: 6,109

    You probabably have dirt between or a bad needle and seat so gas is running past it.
  3. fga

    fga LawnSite Silver Member
    Messages: 2,449

    so what do you think? i could just blow the carb out with the compressor, or car cleaner, or do i have to put something in the tank?

    doesn't sound like a big deal, right?
  4. Potchkins

    Potchkins LawnSite Senior Member
    Messages: 570

    turn the gas off when not in use
    i quit using lawn boy last year
  5. dishboy

    dishboy LawnSite Fanatic
    from zone 6
    Messages: 6,109

    Disasemble the carb, spray bowl and fuel passages with carb cleaner [remove rubber parts first] and then blow out with compressed air. If that does not cure [usually does ] replace the needle and seat assbly. Also check tank to and gas cans for dirt or grass so you don't keep having to do this.
  6. cincymower

    cincymower LawnSite Member
    Messages: 19

    Just happened to me, was a bad float in the carb. Fix that, also smell your oil, if it smells of gas it must be changed. I had to take out the spark plug and pull the starter cord several times to spit gas out of the engine as well before starting it again.

    It taught me to always use the gas cut-off valve when not using the mower.
  7. MikeLT1Z28

    MikeLT1Z28 LawnSite Bronze Member
    Messages: 1,732

    if you take the float out of the carb, shake it and feel and listen for ANY fuel inside it. if there is, it's trashed. it won't float right, won't let the needle close to shut off fuel when the bowl is full. but do 2 stroke lawnboys have floats or just diaphrams?
  8. fga

    fga LawnSite Silver Member
    Messages: 2,449

    good question. never had a carb problem in 6 years!! so this is new to me.

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