Fuel petcocks

Discussion in 'Lawn Mowing' started by pjslawncare/landscap, Jan 15, 2004.

  1. pjslawncare/landscap

    pjslawncare/landscap LawnSite Bronze Member
    Messages: 1,410

    The engine manufacturers recomend that you turn off your fuel petcocks overnite. Do you? Has anyone damaged your engine by not following this rule? tell us about it
  2. lawnman_scott

    lawnman_scott LawnSite Fanatic
    Messages: 7,547

    What is a fuel petcock? Shutoff switch? If so, no i dont ever shut it off unless im working on the carburator or something.
  3. burnandreturn

    burnandreturn LawnSite Senior Member
    Male, from Germany
    Messages: 303

    I know someone that had a float stick in the carb. and the gas kept draining down into the cylinder and blew up next time they tried to start up. That was on a Dixon with a B & S engine. They were told they should have shut off the fuel.
  4. battags

    battags LawnSite Senior Member
    Messages: 607

    That's what I love about this site, you guys are asking the same questions that I am.

    Just yesterday, my dealer called to fill me in on one of my mowers he was working on. (Last freebee before the warranty is up). He said that the was changing the oil and it looked a little "thin". He asked if I was shutting off the fuel before transporting it or storing it overnight. I guess the fuel can somehow mix with oil if you transport it with the fuel petcock on? I've only shut the darn valve off when changing the fuel filter....

    Anyone ever heard of this?


  5. pjslawncare/landscap

    pjslawncare/landscap LawnSite Bronze Member
    Messages: 1,410

    Yes, the valve that turns your fuel off.
  6. walker-talker

    walker-talker LawnSite Platinum Member
    from Midwest
    Messages: 4,771

    On occasion I will shut mine off on my powerseeder while in transport, but other than that....no and never had problems.
  7. scottishmaximus

    scottishmaximus LawnSite Senior Member
    from ohio
    Messages: 289

    i only shut mine off when working on carbs.
  8. PaulJ

    PaulJ LawnSite Bronze Member
    Messages: 1,774

    WE had a three wheeler that the cylider fillup with fuel over night and we couldn't even get it to turn over the next day. Thought it had siezed up. We always shut the fuel off on it after that. I usually only shut my mowers off after the last lawn of the day, or if traveling a little farther. Not all the machines even have a fuel shut off. Or at least on that you can reach.
  9. geogunn

    geogunn LawnSite Gold Member
    from TN
    Messages: 3,010

    same here.

  10. Olylawnboy

    Olylawnboy LawnSite Senior Member
    from Oly Wa
    Messages: 311

    I have a 36" Bobcat WB and it once started going KAPOW when I pulled the rope. I spoke to the dealer about the problem and the first question he asked was "do you shut of the gas when not in use?". Of coarse I said no. I turn it off now overnight and in transit and guess what, no more kapow. Now I shut off the gas on all gravity feed machines. BTW, they say the gas can seep down into the crankcase and literally blow up the motor, not a pleasant thought.

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