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  1. #11
    Bronze Member
    Join Date
    Jun 2003
    Posts
    60
    Location
    Central VA
    Tractor
    Kubota B7610

    Default Re: Tight throttle on B7610

    Another B7610 owner with a tight throttle. Must be normal. I often wondered about this as well but never bothered me enough to ask questions.

  2. #12
    Platinum Member Killer_B's Avatar
    Join Date
    Sep 2004
    Posts
    578
    Location
    Kalamazoo Michigan
    Tractor
    John Deere 3320

    Default Re: Tight throttle on B7610

    V Dave,

    I had the same problem and solved it by loosening the two nuts at the bottom of the throttle arm. It's not easy to reach, but it can be done with a simple combination wrench and some mild cussing. I got lucky, in that when I tuned the bottom nut, the upper nut turned with it. Therefore I did not have to hold the top nut and tighten the bottom "lock nut" after the adjustment.

    Trust me, it's worth the hassle. It's MUCH nicer to operate with a free and easy throttle lever.

    Best of luck.

    Kller B 7610

  3. #13
    Platinum Member
    Join Date
    Oct 2004
    Posts
    955
    Location
    Jasper, Texas
    Tractor
    Kubota B7510HSD

    Default Re: Tight throttle on B7610

    Killer_B,

    How did you get to the adjusting nuts? I have a new B7510 and have the same tight throttle.

    Looks to me like you would have to remove the cover below the steering wheel to get to it and that looks like a lot of work.

    I looked under the hood and there is a "firewall" piece blocking it from that side.

    Bill Tolle

  4. #14
    Super Member
    Rest in Peace
    frank_f15's Avatar
    Join Date
    Mar 2001
    Posts
    6,033
    Location
    BUFFALO ,NEW YORK AREA
    Tractor
    kubota b2400- R4 tires

    Default Re: Tight throttle on B7610

    if it is that new, have the dealer take care of it, but it probably will lossen up eith use.

  5. #15
    Platinum Member v8dave's Avatar
    Join Date
    May 2004
    Posts
    617
    Location
    Northern, Calif.
    Tractor
    Kubota 7610

    Default Re: Tight throttle on B7610

    </font><font color="blue" class="small">( if it is that new, have the dealer take care of it, but it probably will lossen up eith use. )</font>

    Well, I got used to it and forgot to put the tight throttle on the list when I took the tractor in for servicing. [img]/forums/images/graemlins/blush.gif[/img]

    And, it hasn't loosened up with time, if anything it has gotten worse. [img]/forums/images/graemlins/frown.gif[/img]

    I had looked at the dash to find the nuts BIGUN said to loosen. It wasn't obvious how to open the dash to get to the nuts. Now Killer B says it can be done. I guess I'll have to look at it again--it really is a pain to deal with.

    So, yeah Killer B, I'd also like to see a picture of what you are prying open to get to the nuts.

  6. #16
    Platinum Member Killer_B's Avatar
    Join Date
    Sep 2004
    Posts
    578
    Location
    Kalamazoo Michigan
    Tractor
    John Deere 3320

    Default Re: Tight throttle on B7610

    V8,

    To make sure we are talking about the same thing, please see attached schematic and photo. The nuts are parts 055 and 060. They are located about 2" inward from the opening made when the floor mat is pulled back, as shown in the photo.

    I originally thought I would have to take a cheap open end wrench and bend it about 25 degrees or so to get it to reach the nut. But after a little finagling, I did somehow get the wrench on the lower nut enough to turn it about a half turn. And that's all it took to make a night and day difference.

    I don't exactly recall the angle of attack that did the trick. But if you lie down on your back, get comfortable, and fiddle with it for a while, you will eventually find the right combination.

    Don't give up, men. It's a quality of life issue.

    Good luck!
    Attached Files Attached Files

  7. #17
    Platinum Member v8dave's Avatar
    Join Date
    May 2004
    Posts
    617
    Location
    Northern, Calif.
    Tractor
    Kubota 7610

    Default Re: Tight throttle on B7610

    This helps a lot, I was looking in the wrong place for the nuts! I was trying to open the dash panel. This blow up isn't in the service manual. I forgot to check the [PDF] parts manual after I got it from Tractor Smart.

    It's not raining today, I'll pull the cover off and take a look. I might have to wait until I can get the tractor back into the shop to attack it. The concrete drive hasn't cured enough yet to drive on and I'm not up to laying in the mud.

    Thanks!

  8. #18
    Platinum Member
    Join Date
    Oct 2004
    Posts
    955
    Location
    Jasper, Texas
    Tractor
    Kubota B7510HSD

    Default Re: Tight throttle on B7610

    Killer_B,


    Thanks for the tip. I crawled under my B7510 this afternoon. Using a flashlight I looked up and could see where the nuts you referenced were.

    Using a 12 MM, 12 point combination wrench I got hold of the bottom nut and turned it less than 1/6th turn. That was just enough to stop it from sticking but it is still plenty tight.

    It takes some patience and a little contortionist maneuver but was really not that difficult since you showed us exactly where it is.

    Bill Tolle

  9. #19
    Platinum Member Killer_B's Avatar
    Join Date
    Sep 2004
    Posts
    578
    Location
    Kalamazoo Michigan
    Tractor
    John Deere 3320

    Default Re: Tight throttle on B7610

    Bravo!

    Now let's see if we canít liberate a few more obstinate B7610 throttle levers.

    Killer B 7610

    "Happiness is a free and easy throttle."

  10. #20

    Join Date
    Apr 2002
    Posts
    657
    Location
    now in S.C.!!
    Tractor
    Yanmar FF205D

    Default Re: Tight throttle on B7610

    Going to try it on my B7800 also, thanks, bw

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