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  1. #1
    New Member
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    Sep 2011
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    dunham, quebec
    Tractor
    L3800 FEL, HST, backhoe

    Default My engine stops for no reason

    I own a brand new kubota L3800 and the engine stops often as soon as I get off the tractor seat. I tried everything, putting it on neutral (it's a HST), pushing the HST pedal. My Kubota dealer told me that the problem was a malfunctionning sensor and ォadjustサ it but didn't think it need to be replaced. Does anyone experienced this kind of problem on any Kubota tractor? My tractor has a FEL and a backhoe.

  2. #2
    Elite Member blueriver's Avatar
    Join Date
    Oct 2007
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    4,249
    Location
    S.E.Oklahoma
    Tractor
    JD 5520 Montana 4340 Farmall Super C

    Default Re: My engine stops for no reason

    Just a quess ... a safety switch under the seat that shuts the tractor down when you get off?
    "When selling a lifetime ... don't sell it short"
    auctioneer@southernauctionco.com

  3. #3
    New Member
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    Sep 2011
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    Location
    dunham, quebec
    Tractor
    L3800 FEL, HST, backhoe

    Default Re: My engine stops for no reason

    This switch detects if your on the seat or not but it's not like a garden tractor that turns the engine off when the operator get off the seat. The security reason is to prevent the oparator to be hit by something which is not the case. I think this switch doesn't work well.

  4. #4
    Elite Member blueriver's Avatar
    Join Date
    Oct 2007
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    4,249
    Location
    S.E.Oklahoma
    Tractor
    JD 5520 Montana 4340 Farmall Super C

    Default Re: My engine stops for no reason

    Can it be by passed ??
    "When selling a lifetime ... don't sell it short"
    auctioneer@southernauctionco.com

  5. #5
    Veteran Member
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    Oct 2010
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    NHtd75

    Default Re: My engine stops for no reason

    Have you tried setting the parking brake before leaving the seat?

  6. #6
    Epic Contributor jinman's Avatar
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    Feb 2001
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    20,950
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    Texas - Wise County - Sunset
    Tractor
    NHTC45D, NH LB75B, Ford Jubilee

    Default Re: My engine stops for no reason

    Quote Originally Posted by guy gagnon View Post
    This switch detects if your on the seat or not but it's not like a garden tractor that turns the engine off when the operator get off the seat.
    Well, yes it is just like a garden tractor if it works like most tractors. I suggest setting the parking brake with the transmission in neutral just as SandburRanch suggested.
    Jim


  7. #7
    New Member
    Join Date
    Sep 2011
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    14
    Location
    dunham, quebec
    Tractor
    L3800 FEL, HST, backhoe

    Default Re: My engine stops for no reason

    No but I will. Dealer told me that it was not related but hey.. these guys are not perfect... Thanks

  8. #8
    teg
    teg is offline
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    Default Re: My engine stops for no reason

    The seat safety switch only kills the engine when the PTO is engaged. Is the PTO off? That might be the sensor that needs to be adjusted.

    There are no safety switch for the parking brake.

    If the PTO needs to be used when you want to get off the tractor, you have 2 seconds to tilt the seat forward onto the steering wheel.

  9. #9
    Super Member flusher's Avatar
    Join Date
    Jun 2005
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    6,208
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    Northern California-Tehama Co.
    Tractor
    2008 Mahindra 5525, 1964 MF-135 diesel, 1951 Farmall Super A, 1951 Minneapolis Moline BF, 1945 Oliver 60 Row Crop, 1949 JD B widefront

    Default Re: My engine stops for no reason

    Quote Originally Posted by teg View Post
    The seat safety switch only kills the engine when the PTO is engaged. Is the PTO off? That might be the sensor that needs to be adjusted.

    There are no safety switch for the parking brake.

    If the PTO needs to be used when you want to get off the tractor, you have 2 seconds to tilt the seat forward onto the steering wheel.
    I think you nailed it--I had the same problem with my 2005 kubota B7510HST and it was caused by the pto shift being away from the OFF position a slight amount. Just had to push the shift lever to full OFF and the glitch cleared immediately.

  10. #10
    New Member
    Join Date
    Sep 2011
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    Location
    dunham, quebec
    Tractor
    L3800 FEL, HST, backhoe

    Default Re: My engine stops for no reason

    Thanks Teg. The PTO was supposed to be off but I will double check. What about the use of the backhoe? Do I have 2 seconds also to tilt the seat?

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