Go BottomB7800 Throttle
 | beagle
Join Date: Jan 2004 Posts: 1333 Michigan 
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2004-06-06 87870
The throttle lever on my 7800 is so stiff that I have a hard time setting the rpms where I want them. I have to really crank on the thing to get it to move. Anyone else have this problem, and if so, what is the best way to free it up? My neighbor has a 7800 and his throttle lever is smooth. Help
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 | kubotaguy
Join Date: Nov 2003 Posts: 360 Shepherdstown, WV 
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2004-06-07 87927
My 7800 throttle is very tight as well. I just chalked it up to being new. I sort of bump it with my hand but like you said, it is tough to fine tune the rpms. I'm open for suggestions as well. ....
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| beagle
Join Date: Jan 2004 Posts: 1333 Michigan
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2004-06-07 87936
I would have thought this to be normal, except my neighbors machine has even less hours on it than mine, and his moves very smoothly. I've tried getting at the linkage to see what's up, but you have to remove the cowl to get at it. Hoping someone can help us out. If not, I'm going to have to hit the weight machine to operate my throttle lever. I'm sure there is an answer to this. ....
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| beagle
Join Date: Jan 2004 Posts: 1333 Michigan
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2004-06-07 87994
With all the experience on this site, isn't there someone who has had to free up a sticky throttle lever? Can anyone help a couple 7800 owners out here? These things are really hard to set right. ....
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 | TC35driver
Join Date: Nov 2003 Posts: 3 Vernon, CT
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2004-06-08 88107
Just did some window shopping for a new 7800. Maybe I should consider keeping my New Holland ? How do you guys like your Kubota otherwise ? Any other problems ? ....
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| kubotaguy
Join Date: Nov 2003 Posts: 360 Shepherdstown, WV
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2004-06-09 88122
I love my 7800. It has done everything I have asked it to and more. But with like anything you buy, you are going to find some little quirks. A tight throttle is not that big of a deal but it would be nice to have it loosened up some. I figured it would loosen up over time but I have just under 100 hours on mine and it is just as tight. Other than that, I have been very impressed with the machine. ....
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| beagle
Join Date: Jan 2004 Posts: 1333 Michigan
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2004-06-09 88123
I agree with kubotaguy. This is a great tractor, love it. The only thing I am trying to do is get the throttle loosened up. It has been more than I even expected, and would not trade it for any other tractor, and I did a lot of shopping around before I bought this. I know there is a simple answer out there for the sticky throttle problem. ....
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| reh138
Join Date: Feb 2004 Posts: 5 Mead,WA
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2004-06-09 88139
I have a B7800 also and it sticks at 1500 rpm. Hoping it will loosen up over time. Have 110 hours on tractor, runs great other wise. Bob ....
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| crawdad
Join Date: Sep 2003 Posts: 2 Albert Lea Minnesota
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2004-06-09 88141
My B2910 is tight as well and so was my B2400.
I guess it better than flopping in the wind!
....
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| kevinj54
Join Date: Jul 2003 Posts: 31 Michigan
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2004-06-09 88160
Open the dash near the throttle. Most of the newer machines have friction disks which are adjustable. I think it is better to be too tight than have the throttle move on its own. ....
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| beagle
Join Date: Jan 2004 Posts: 1333 Michigan
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2004-06-09 88173
kevin, opening the dash near the throttle is part of the issue. The dash doesn't open at the throttle, nor is there really a dash. There is a cowl and a bonnet that house the instrument panel and controls. Good luck getting inside either one of these pieces. I have ordered a shop manual to figure out the corrrect procedure for removing the cowl. From the parts manual, I don't see a friction plate, any more than a lock nut and washer on the throttle stem.
Not looking for a throttle lever that flops in the breeze. Looking for a lever that isn't so stiff that it is impossible to set the rpms were you want them. By the time you crank on it hard enough to move it, you are jumping 500 rpm. I know this can be adjucted because my neighbors is so smooth.
I'd hate to think I have to contact the dealer for something that should be so easy to solve on my own. Thanks for the comments. ....
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| kevinj54
Join Date: Jul 2003 Posts: 31 Michigan
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2004-06-09 88180
I think the nut and washer you see is the friction disk. If you can get to that nut just loosen it a small amount. I had to back it off a little on my BX but it was easy to do. ....
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| beagle
Join Date: Jan 2004 Posts: 1333 Michigan
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2004-06-09 88195
Thanks, I'll se if I can get to it from under the trator. That would be my first approach from what I see in the parts manual. I'll give it a try tommorow and see if I can get to it without dismantling the tractor. Thanks again. ....
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 | Art White
Join Date: Jan 2000 Posts: 6898 Waterville New York 
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2004-06-10 88225
I can't remember having one that we have had to adjust in quite a while. The last one we did a short time later they complained of it being to loose. The dash board is the easiest access to what's under it but if the linkage is lumpy I might be checking it out to see if there might be something that is rubbing on it for one reason or the other. Take a look under the hood at the bottom right below your brakes and you will find the adjustment where you don't need to remove anything just stick a socket on it and adjust. But do look for another reason before jumping the gun here! ....
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| kevinj54
Join Date: Jul 2003 Posts: 31 Michigan
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2004-06-10 88228
Thanks for clarifying exactly where the disk is on the 7800. ....
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| beagle
Join Date: Jan 2004 Posts: 1333 Michigan
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2004-06-10 88231
Thanks Art. I checked the other linkage and everything seems to be fine. The stiffness is definitely in the stem. I didn't look under the hood, I'll try that tonight. I looked under the tractor and can see the flange and jamb nut, but can't get at them. I'll look under the hood tonight. Thanks again. ....
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| Art White
Join Date: Jan 2000 Posts: 6898 Waterville New York
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2004-06-10 88236
The piece you need is right by the right side of the dash at the bottom. Do look for a tight area on the rest of the linkage first. ....
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| beagle
Join Date: Jan 2004 Posts: 1333 Michigan
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2004-06-11 88303
Well, made an attempt at the throttle linkage last night. The only access to the spring washers and lock nut is from under the cowl. Even after getting the cowl out of the way enough to see the nut and jamb nut, more disassembly of the brake and speed control linkage would be required to do a proper job of setting the friction properly.
My advise after two hours in the barn having fun with this, the cure is worse than the disease. Live with the stiff throttle linkage, adjusting it it a nightmare. ....
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| Art White
Join Date: Jan 2000 Posts: 6898 Waterville New York
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2004-06-11 88337
GO undder the right hand of the platform by the brake petals. The double nut on the bottom of the shaft needs to be loosened to make your adjustment. If you spend more then five minutes doing it after you get out the right size wrench you've had to many cold ones! ....
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| beagle
Join Date: Jan 2004 Posts: 1333 Michigan
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2004-06-13 88432
Started exactly there. Have you been under the platform and seen exactly what you are up gaginst from theat angel. To get two wrenches in place to properly tighten the set nut to the jamb nut was a piece of nuckle gymnastics I was not able to porform. It is awfully busy under there with speed control linkage and throttle linkage. I just couldn't get a proper position without going through the cowl.
Not doubting it can be done that way. My figers and tools couldn't do it. Make sure you have the right set of metric wrenches. You need a very slender 12mm wrench to hold the jamb nut while turning the set nut. ....
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