Hi,
My Throttle return spring is so tight that I have a tough time keeping it in place. The teeth that hold the throttle level in place are worn at the high end and it likes jump back. Sometimes I have to hold it in place and it can take a little strength as it's constantly pushing back. The return spring seems excessively big but looks factory. Anyone else have in problems like this? I wanna replace it with a smaller spring but don't know if there is anything I should know.
Thanks,
Johnny
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Throttle Return Spring Tight
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49 Super A - Location: Upton, MA
Throttle Return Spring Tight
Johnny Lindquist
1958 Fast Hitch Lo Boy with Woods 59CL-3 Mower Deck, L38 Disc Harrow, F194 Plow and L54 Blade
1958 Fast Hitch Lo Boy with Woods 59CL-3 Mower Deck, L38 Disc Harrow, F194 Plow and L54 Blade
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- 10+ Years
Re: Throttle Return Spring Tight
Johnny, some of them pull hard. Take a small 3 sided file and deepen your notches, or it can be done with a dremmel or 4.5" grinder with a cut-off wheel.
Or, you can get a new one from TM.
http://www.tmtractor.com/new/gv/689fp.htm
http://www.tmtractor.com/new/gv/6436fp.htm
Or, you can get a new one from TM.
http://www.tmtractor.com/new/gv/689fp.htm
http://www.tmtractor.com/new/gv/6436fp.htm
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Re: Throttle Return Spring Tight
Johnny:
As Dale said it is the quadrant that needs attention. Both of these articles were written by one of our greatest Cub Guru's - George Willer (RIP +)
Or you can call Tom and Lynn
As Dale said it is the quadrant that needs attention. Both of these articles were written by one of our greatest Cub Guru's - George Willer (RIP +)
- Superstructure
- How To Repair A Worn Throttle Quadrant - Method #1
- How To Repair/Rebuild A Worn Throttle Quadrant - Method #2
Or you can call Tom and Lynn
Confusion breeds Discussion which breeds Knowledge which breeds Confidence which breeds Friendship
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Re: Throttle Return Spring Tight
Johnny, that spring is not really a return spring, but a governor control spring. The strength of the spring controls engine RPM. If you replace it with a lighter spring, you won't have the needed engine speed. You need to do as Dale suggests and repair or replace the lever components.
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Re: Throttle Return Spring Tight
There's usually a corresponding notch worn into the tooth on the side of the throttle lever to accompany the worn quadrant. Both come from 50 or so years of just pushing the lever forward instead of moving it to the left to clear the quadrant teeth, then forward, then back to the right into a notch. Replacing or repairing both may be necessary for correct operation.
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Re: Throttle Return Spring Tight
Johnny,
Symptoms sound familiar to mine last year. Lubricate all the pivot points on the governor control rod/spring assembly with a light oil, work the governor control lever (throttle) back and forth with the tractor running and things should free up.
Peter
Symptoms sound familiar to mine last year. Lubricate all the pivot points on the governor control rod/spring assembly with a light oil, work the governor control lever (throttle) back and forth with the tractor running and things should free up.
Peter
1957 Farmall Cub "Emory", Fast-Hitch, L-F194 Plow & Colter, L-38 Disc Harrow, Cub-54A Blade, Cub-22 Sickle Bar Mower, IH 100 Blade
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Re: Throttle Return Spring Tight
Hi Johnny,
As a recent first time cub owner, I had the same problem. Being a former joiner who used to sharp my own hand saws and other joiner's handsaws too. I took it off the tractor put it in the vice and deepened the notches with a triangular file which I used for sharpening the saws. Worked a treat, problem gone.
Donegal Cub.
As a recent first time cub owner, I had the same problem. Being a former joiner who used to sharp my own hand saws and other joiner's handsaws too. I took it off the tractor put it in the vice and deepened the notches with a triangular file which I used for sharpening the saws. Worked a treat, problem gone.
Donegal Cub.
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Re: Throttle Return Spring Tight
George did quality work.
I built up mine with the MIG then ground the outside on bench grinder, the inner/under part with a die grinder to eyeball-estimated 1/8 thickness for the notched portion. Those thick notches should last much longer. But they are much more work to cut. Also the lever is welded and rebuilt to eliminate the work notch in it.
I built up mine with the MIG then ground the outside on bench grinder, the inner/under part with a die grinder to eyeball-estimated 1/8 thickness for the notched portion. Those thick notches should last much longer. But they are much more work to cut. Also the lever is welded and rebuilt to eliminate the work notch in it.
Luck favors those who are prepared
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49 Super A - Location: Upton, MA
Re: Throttle Return Spring Tight
Excellent thanks for all useful information I'm going to make use of all of it.
Johnny Lindquist
1958 Fast Hitch Lo Boy with Woods 59CL-3 Mower Deck, L38 Disc Harrow, F194 Plow and L54 Blade
1958 Fast Hitch Lo Boy with Woods 59CL-3 Mower Deck, L38 Disc Harrow, F194 Plow and L54 Blade
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