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oops, wrong fuel in john deere

Discussion in 'Mechanic and Repair' started by Squirter, Nov 21, 2007.

  1. Squirter

    Squirter LawnSite Member
    from Zone 5
    Messages: 172

    Turkey greetings,

    My neighbor thought he would do me a favor while i was away at work so he jumped on my john deere riding tractor w/ kawasaki gasoline engine and mowed grass/mulched leaves. When the tractor ran out of gas, he went into my garage and grabbed a gas can that i had used to contain old gas that had been drained from my 2cycle echo weedeaters, shindaiwa blowers, stihl stick edgers and even my 4 cycle push mower. This fuel was old.

    So, he added about 1 1/2 gal. of the old gas/oil fuel to the John Deere and said he ran the tractor for about 10 minutes (some of the time was at idle) while he was cleaning the tractor to put it away in the garage.

    My questions are...

    What damage has potentially been done to my Kawasaki 4cycle engine? (He said it ran fine with the "bad fuel").

    What should I do at this point (after draining the tank)??? Change fuel filter? Change plugs? What about the fuel in carburator???

    Until this stupid episode, I was getting ready to put the John Deere away for the winter. I have recently stopped draining the gas/fuel from my lawn equipment when winterizing. Instead, I just fill the tank(s) with fresh gasoline mixed at the proper ratio with SEAFOAM (a "stabil" type product). I have used Seafoam with pretty good results as it is not only a stabilizer/winterizer, it also has some important engine cleaning ingredients. Oh well............now what do I do?
  2. fixer67

    fixer67 LawnSite Silver Member
    Messages: 2,098

    I would say little or no damage was done from the sound of it. Just drain the old gas out change the fuel filter and put new gas in it and run it until you feel all the old gas is gone from the fuel system. If the gas was as bad as you though it was the engine would not have ever even started in the first place. I do not think you have any thing to really worry about. Just go ahead winterizing as you planed in the first place. That is what I think.
  3. Tadams

    Tadams LawnSite Senior Member
    Messages: 787

    Putting mix fuel in the 4 stroke won't hurt anything. It might smoke a little but all you are doing is lubricating the top end a little bit:D
  4. scottm1

    scottm1 LawnSite Member
    from Mo
    Messages: 109

    Nothing to worry about. Old gas will only make it run bad, but won't hurt anything. 2 cycle oil in a 4 cycle engine will only make it smoke, but again won't hurt anything. I would just drain the fuel, change the filter, and put in new gas.

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