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Throttle issue
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- Cub Star
- Posts: 53
- Joined: Fri May 27, 2022 4:36 pm
- Zip Code: 75119
Throttle issue
Gentlemen I am working on my cub again. Today I got the electrical to have spark and I’ve got gas. The cub popped off for around 20 seconds. In that time I tried to throttle up and down but nothing happened and then the cub died. And idea on what might be the culprit? My thought is cool since the carb was just rebuilt. The timing is also off and the cub misfired a few times.
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- Team Cub
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- Location: OH, New Haven (Hamilton County)
Re: Throttle issue
Did you time the carb to the governor. That needs to be done any time the carb is removed
There are two ways to get enough Cubs. One is to continue to accumulate more and more. The other is to desire less.
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- Cub Star
- Posts: 53
- Joined: Fri May 27, 2022 4:36 pm
- Zip Code: 75119
Re: Throttle issue
Barnyard wrote:Did you time the carb to the governor. That needs to be done any time the carb is removed
I did not I’m not sure what that means.
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- Team Cub
- Posts: 24289
- Joined: Tue Aug 07, 2007 3:39 pm
- Zip Code: 45030
- Tractors Owned: At This Time
40 Farmall Cubs (Round Hood)
2 Farmall Cub (Square Hood)
2 IH Cubs (Square Hood)
5 Lo-Boys (Round Hood)
2 Lo-Boys (Square Hood)
2 Farmall 404's
1 Farmall H
1 Ferguson 20
1 Cub Cadet 125
1 Kubota B-7100 - Circle of Safety: Y
- Location: OH, New Haven (Hamilton County)
Re: Throttle issue
There are two ways to get enough Cubs. One is to continue to accumulate more and more. The other is to desire less.
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- 10+ Years
- Posts: 5010
- Joined: Fri Oct 29, 2010 11:34 pm
- Zip Code: 36558
- Tractors Owned: Cubs: (3)'49's, (1 is for parts), (1)'57 IH Cub LoBoy w/FH, (2)154 Number Series Loboys, (1 is for parts), '76 Longstripe w/FH, Mowers: C-22, Bush Hog 412, Pennington 59, Woods RM42CF, Woods 42, assorted FCub plows, planters, discs, etc. OTHERS: '49 AC B & Ind. Sickle mower, '61 AC D12 Ser 2, '52 8N, '56 Ferguson 35 Deluxe, '47 & '49 Avery V, '53 MM BG (offset), '51 JD M (regular), '56 JD 420C, with Blade and fire plow, '85 JD 850 (Yanmar) w/72" belly mower, '76? Yanmar 2TR15 1500 & Bush Hog SQ42S-2 mower, '78? FORD Dexta, '86 FORD LGT14D & 48" Mower, (2)Cub Cadets & Mowers (MTD), (4) Sears Surburban's, other MTD mowers, Jeeps & other misc. "treasures"
- Circle of Safety: Y
- Location: AL (Southwest)
Re: Throttle issue
When the engine is not running, check the throttle linkage to ensure everything is moving, especially the lever part #11 in the attached drawing. Lubricate all movement points, especially where #11 pivots on the shaft #12. If it is frozen up use caution as the lever is fragile and can be broken by too much pressure. Click on the picture to enlarge it. JMHO Stan
Stan in LA (lower AL)
USAF & Reserves, Reg ARMY, ARMY NG (AL)
USAF & Reserves, Reg ARMY, ARMY NG (AL)
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- 5+ Years
- Posts: 2843
- Joined: Wed Jul 08, 2015 10:24 am
- Zip Code: 19342
- Tractors Owned: 1948 6v - Dozer
1949 with kub klipper belly mower. mag 6v - Mom
1950 with plow, 54 blade, mott mag 6v - Roxanne
1953 54 blade, c22, wood 42 6v
1957 6v - barn Queen
1965 lo-boy with c-3 mower 12 v - Loboy
1974 Horse II 12 v c-2
1975 with woods 42-6 12 v - Horse
1979 long strip 12 v stuck engine
130 with international 1000 loader 6 v
1969 140 with bush hog tow behind mower 12 v
Terramite T-6 4WD Backhoe Perkins diesel
Memberships: Rough and Tumble Engineers Historical Association;Chapter 8 IH Collectors; IH Collectors Worldwide - Circle of Safety: Y
- Location: Glen Mills PA
Re: Throttle issue
Make sure all of the linkages from throttle to carb are free and the lever arm on the governor is free before you do the governor-to-carb adjustment.
Also double-check that the choke and throttle links are not reversed on the carb.
Also double-check that the choke and throttle links are not reversed on the carb.
When you only have 9 horsepower you need to know the names of all of the ponies!
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- Cub Star
- Posts: 53
- Joined: Fri May 27, 2022 4:36 pm
- Zip Code: 75119
Re: Throttle issue
Thank you gentlemen the linkage definitely needs work. What would be the best way to attack it? I hit it with some wd 40
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- Team Cub
- Posts: 24289
- Joined: Tue Aug 07, 2007 3:39 pm
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- Tractors Owned: At This Time
40 Farmall Cubs (Round Hood)
2 Farmall Cub (Square Hood)
2 IH Cubs (Square Hood)
5 Lo-Boys (Round Hood)
2 Lo-Boys (Square Hood)
2 Farmall 404's
1 Farmall H
1 Ferguson 20
1 Cub Cadet 125
1 Kubota B-7100 - Circle of Safety: Y
- Location: OH, New Haven (Hamilton County)
Re: Throttle issue
I would hit it with PB Blaster or kroil and lightly tap it with a hammer. WD 40 is basically a water displacement and has very little, if any, lubricating value.
There are two ways to get enough Cubs. One is to continue to accumulate more and more. The other is to desire less.
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- Cub Star
- Posts: 53
- Joined: Fri May 27, 2022 4:36 pm
- Zip Code: 75119
Re: Throttle issue
I've been putting some pb blaster too it but I think I'm going to have to take off the alternator to get after it. It's running but dies quickly. It seems like it's missing a lot. I took a video.https://youtube.com/shorts/TsNVjigR0Dc?feature=share
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- 5+ Years
- Posts: 2843
- Joined: Wed Jul 08, 2015 10:24 am
- Zip Code: 19342
- Tractors Owned: 1948 6v - Dozer
1949 with kub klipper belly mower. mag 6v - Mom
1950 with plow, 54 blade, mott mag 6v - Roxanne
1953 54 blade, c22, wood 42 6v
1957 6v - barn Queen
1965 lo-boy with c-3 mower 12 v - Loboy
1974 Horse II 12 v c-2
1975 with woods 42-6 12 v - Horse
1979 long strip 12 v stuck engine
130 with international 1000 loader 6 v
1969 140 with bush hog tow behind mower 12 v
Terramite T-6 4WD Backhoe Perkins diesel
Memberships: Rough and Tumble Engineers Historical Association;Chapter 8 IH Collectors; IH Collectors Worldwide - Circle of Safety: Y
- Location: Glen Mills PA
Re: Throttle issue
You have to adjust the linkage. Idle is at the 1/2 way of the throttle lever - you are working with 1/2 the range of the throttle
When you only have 9 horsepower you need to know the names of all of the ponies!
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- Cub Star
- Posts: 53
- Joined: Fri May 27, 2022 4:36 pm
- Zip Code: 75119
Re: Throttle issue
Definitely need to adjust it. I've got to get the linkage freed up all the way.
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- Cub Star
- Posts: 53
- Joined: Fri May 27, 2022 4:36 pm
- Zip Code: 75119
Re: Throttle issue
I may have found my linkage issue. Is there supposed to be a key that is missing? https://youtube.com/shorts/vKRPTLz4B3g?feature=share
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- 10+ Years
- Posts: 6184
- Joined: Mon Mar 19, 2012 7:33 pm
- Zip Code: 00000
- Tractors Owned: 1956 Farmall Cub with Fast Hitch, F-11 plow, Disc, Cultivator, Cub-22 mower
- Circle of Safety: Y
- Location: Wa.
Re: Throttle issue
Hi,
With the engine off, and throttle lever all the way ahead, like in your video, you shouldn't be able to move the linkage ahead of the carburetor any, it should be tight fully to the rear, which is opening the carb throttle plate.
Something is wrong, the key number 6 in Stan's parts picture above, might be gone, or something else wrong.
You should be able to feel the resistance when pushing the throttle lever ahead, it is stretching the spring at the governor when you move the lever ahead.
Your video isn't showing in from the left side enough to see the linkage near the governor where key number 6 would be. Another video would be good, with plenty of light, and then move the linkage, like you did.
You have to remove the pin number 3, and the 2 bolts holding 5 onto the engine, to pull 5 and shaft 30 out of number 8.
The yoke number 2 is screwed onto rod 1 too far also.
I sent you a PM.
With the engine off, and throttle lever all the way ahead, like in your video, you shouldn't be able to move the linkage ahead of the carburetor any, it should be tight fully to the rear, which is opening the carb throttle plate.
Something is wrong, the key number 6 in Stan's parts picture above, might be gone, or something else wrong.
You should be able to feel the resistance when pushing the throttle lever ahead, it is stretching the spring at the governor when you move the lever ahead.
Your video isn't showing in from the left side enough to see the linkage near the governor where key number 6 would be. Another video would be good, with plenty of light, and then move the linkage, like you did.
You have to remove the pin number 3, and the 2 bolts holding 5 onto the engine, to pull 5 and shaft 30 out of number 8.
The yoke number 2 is screwed onto rod 1 too far also.
I sent you a PM.
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- Cub Star
- Posts: 53
- Joined: Fri May 27, 2022 4:36 pm
- Zip Code: 75119
Re: Throttle issue
Thank you glen! I'll check the email I took the rod out and the half moon key was still in place. I tried to re adjust the linkage and having the same problem. What should I do next?
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- 10+ Years
- Posts: 6184
- Joined: Mon Mar 19, 2012 7:33 pm
- Zip Code: 00000
- Tractors Owned: 1956 Farmall Cub with Fast Hitch, F-11 plow, Disc, Cultivator, Cub-22 mower
- Circle of Safety: Y
- Location: Wa.
Re: Throttle issue
Next I would check and see if the keyway in part number 8 in the parts picture is worn.
It is sort of common for the keyway to wear.
That is a lot of looseness you showed in the video.
It can't work right with that much looseness forward and back.
There should be no play in the joint where the key 6 is.
The key can wear too, and need replacing.
If it is loose there, you might be able to put in a shim of some kind to tighten it.
The cast piece of 8 is held onto the shaft part of 8 by a pin, it might be worn or gone, look at that too.
The 2 pieces come made together, as far as I know, if you need to replace it.
The governor has to be taken apart to put it in.
Below is a pic. The shaft isn't fully in the cast part in the pic.
It is sort of common for the keyway to wear.
That is a lot of looseness you showed in the video.
It can't work right with that much looseness forward and back.
There should be no play in the joint where the key 6 is.
The key can wear too, and need replacing.
If it is loose there, you might be able to put in a shim of some kind to tighten it.
The cast piece of 8 is held onto the shaft part of 8 by a pin, it might be worn or gone, look at that too.
The 2 pieces come made together, as far as I know, if you need to replace it.
The governor has to be taken apart to put it in.
Below is a pic. The shaft isn't fully in the cast part in the pic.
- Attachments
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- Cub gov linkage.jpg (78.41 KiB) Viewed 75 times
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