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  1. #1
    New Member
    Join Date
    Oct 2004
    Posts
    15
    Location
    Atlanta Metro Area
    Tractor
    Kubota B7610

    Default B7610 not starting

    I have a B7610 which I am very satisfied with unless it's not starting. This occures totally random and not very often. After I use the tractor for a couple hours and I have to turn it off for some reason, I can not start it back up again. When I turn the key, there is dead silence. The tractor will not start. Eventually, after I moving every lever and pedal on the tractor I can start it back up again.
    Any suggestions?

  2. #2
    Bronze Member
    Join Date
    Jan 2007
    Posts
    51
    Location
    andover, ma
    Tractor
    L4330HSTC,FEL

    Default Re: B7610 not starting

    Ck the clutch pedal's micro switch. It could be sticking or defective

  3. #3
    Veteran Member ccsial's Avatar
    Join Date
    Jun 2005
    Posts
    1,530
    Location
    NorthWest Illinois
    Tractor
    (Kuboto L3400) (Ford 1910 4WD w/FEL) (Deere X748SE) All bought new

    Default Re: B7610 not starting

    It sure sounds like a switch. It may just need adjusting. Try moving each thing and then starting until you find which one it is.

    The clutch is the prime suspect. But there may be another.
    Kubota L3400-HST, Ford 1910-Gear FEL, John Deere X748SE

  4. #4
    Super Member flusher's Avatar
    Join Date
    Jun 2005
    Posts
    6,208
    Location
    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: B7610 not starting

    Quote Originally Posted by JHohler
    I have a B7610 which I am very satisfied with unless it's not starting. This occures totally random and not very often. After I use the tractor for a couple hours and I have to turn it off for some reason, I can not start it back up again. When I turn the key, there is dead silence. The tractor will not start. Eventually, after I moving every lever and pedal on the tractor I can start it back up again.
    Any suggestions?

    Your 7610 has a few interlock switches:

    - two seat switches
    one senses the operator's weight
    the other senses whether the seat is tilted or upright
    - a clutch pedal switch
    - a gear shift switch
    - one or more pto lever switches

    These switches are part of what kubota calls the "operator presence controller".

    There's also a "key stop timer" that operates and controls the fuel cutoff solenoid. This time holds the fuel cutoff signal for about 10 seconds under the following two conditions:

    Condition #1:
    Seat switch #1 OFF (seat vacant)
    Gear shift engaged
    PTO lever either in neutral or engaged
    Seat switch #2 ON (seat tilted) or OFF (seat upright)

    Condition #2:
    Seat switch #1 OFF (seat vacant)
    Gear shift in neutral
    PTO lever engaged
    Seat switch #2 OFF (seat upright)

    Sounds like at least part of the problem may be that you inadvertently activated the key stop timer.

  5. #5
    Gold Member digger2's Avatar
    Join Date
    Dec 2006
    Posts
    265
    Location
    n.e. pa.(lycoming co.)
    Tractor
    kubota B26 TLB,former B7610 owner

    Default Re: B7610 not starting

    I also agree that it sounds like one of your safety interlocks.But if all else fails, check the key switch.I had a car one time that would shut off for no
    aparent reason.I looked at everything i could think of.Finally out of desperation i replaced the ignition switch.Thats what it was.The contacts inside were just plain wore out and were not making contact,so no juice to the starter solenoid,and the starter wouldnt turn the engine over.It would also kill the ignition.Of course that was a gas engine but the basic starting system(except for spark) is the same.Thats something else you might check,the starter solenoid.Whatever it is let us know when you find out,i have a B7610 too!!!

  6. #6
    Platinum Member PSDStu's Avatar
    Join Date
    Jul 2004
    Posts
    646
    Location
    Marianna, FL
    Tractor
    Kubota, M5040 HDC, L4060 HSTC, BX2360, RTV 1140

    Default Re: B7610 not starting

    Try rocking the FWD and Reverse Pedal, if it's not exactly in the middle it won't let you start. This is what I run into most often when my 7510 won't start.

  7. #7
    Silver Member
    Join Date
    Jun 2006
    Posts
    110
    Location
    Central, IL
    Tractor
    B7610 Kubota

    Default Re: B7610 not starting

    I have run into this a couple of times with my 7610 and the pto lever was bumpted where it was the culprit.

    Hagman
    B7610 w/Fel, MMM & Box Blade

  8. #8
    Silver Member Harvster's Avatar
    Join Date
    Nov 2006
    Posts
    145
    Location
    PA
    Tractor
    Kubota B7610

    Default Re: B7610 not starting

    I did the little dance routine on my 7610 twice today. Once it was the PTO lever that got bumped when getting off the tractor and once it was the positioning of the FWD/REV pedal. Every time I have to go through the routine I feel like I have OCD. And when ever I go out tractoring I always make sure that the stove is off, and I know the stove is off because burner #1 is off...#2 is off....#3 is off........

  9. #9
    Silver Member DanR67's Avatar
    Join Date
    Feb 2004
    Posts
    241
    Location
    N. Central Massachusetts
    Tractor
    Kubota B7610

    Default Re: B7610 not starting

    JHohler -

    I looked up all the safety switches in my B7610 Work Shop Manual once for someone with a similar problem - here's a link to the thread:

    http://www.tractorbynet.com/forums/k...e-off-opc.html

    As I mentioned in the thread - I seem to inadvertently bump the PTO lever from time to time while getting on / off - and I always have to take a few calming breaths - then recheck everything. (I certainly got a lump in my throat the first time I turned the key...and *nothing*...)

    Hope that helps,

    Dan
    Kubota B7610 / LA352 FEL / 54" MMM / 50" 3PH Snowblower / Markham Toothbar

    My B7610 Pictures

  10. #10
    New Member
    Join Date
    Oct 2004
    Posts
    15
    Location
    Atlanta Metro Area
    Tractor
    Kubota B7610

    Default Re: B7610 not starting

    Thanks for all the usefull tips. I think in my case it is the forward/reverse pedal that's not always in the neutral position. I guess I have to memorize a little checklist to go through for the next time this happens.

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