Hello,
I am currently trying to solve a problem with my farmall cub and would appreciate all the help i can get.
The problem is that my cub will run fine will parked with no load on the motor but when i try to drive it lacks power and will stall on a slight hill even in first. I have recently clean the fuel tank and sediment bowl, installed a new carburetor and rebuilt the governor and re weird the hole tractor.
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Cub dies under load
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- Jonathan
- 5+ Years
- Posts: 10
- Joined: Wed Jun 28, 2017 4:52 pm
- Zip Code: 00000
- Tractors Owned: These are my farmalls all my grandaddy's tractors
1952 cub with fast hitch name (grandaddy Eddie s.)
1957 cub with fast hitch name (grandaddy Leon b.)
1970 140 with fast hitch name (grandaddy Bill j. )
I'm looking fast hitch stuff for all 3 of then I have nothing
-
- Team Cub Mentor
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Re: Cub dies under load
Complete engine tune up, in including compression tests. First, compression tests then check the ignition timing.
What is the history of this tractor/engine? How long have you owned the tractor?
Welcome.
What is the history of this tractor/engine? How long have you owned the tractor?
Welcome.
I have an excuse. CRS.
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- Team Cub
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- Location: MN
Re: Cub dies under load
Recheck the governor to carb linkage for free movement and proper adjustment.
-
- 10+ Years
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- Joined: Wed Feb 19, 2014 1:09 pm
- Zip Code: 32736
- Tractors Owned: The crew:
"John", 1952 Cub
"Paul", 1951 Cub
"George", 1958 LoBoy Cub with Wagner 45 Loader
"Ringo", 1977 Cub
So far, Paul and Ringo have arrived. John and George were supposed to follow ages ago, but apparently have gone awol. Long story. - Circle of Safety: Y
Re: Cub dies under load
My first thoughts would be a fuel supply issue or slop in the governor-to-carb linkage.
When it starts to stumble, can you get it to run a bit better by closing the choke partially/fully? That would indicate a fuel restriction.
You say you recently cleaned the tank and strainer. Does that include the inlet valve to the strainer? Did you clean the screen at the inlet to the carb? Did you clean the jet? It takes a very small amount of crud at any of these locations to restrict fuel supply.
If there is too much slop in the governor-to-carb linkage, the governor may be requesting a wider throttle, but the carb may not be getting the message to respond.
Did tractor work prior to this work? A more thorough history would help.
When it starts to stumble, can you get it to run a bit better by closing the choke partially/fully? That would indicate a fuel restriction.
You say you recently cleaned the tank and strainer. Does that include the inlet valve to the strainer? Did you clean the screen at the inlet to the carb? Did you clean the jet? It takes a very small amount of crud at any of these locations to restrict fuel supply.
If there is too much slop in the governor-to-carb linkage, the governor may be requesting a wider throttle, but the carb may not be getting the message to respond.
Did tractor work prior to this work? A more thorough history would help.
- Slim140
- 5+ Years
- Posts: 4908
- Joined: Wed Nov 22, 2017 6:24 am
- Zip Code: 00000
- Tractors Owned: .
1970 International 140
1972 International 140
1949 John Deere A
1993 Ford 4630 W/Loader
1965 John Deere 110
1961 Cub Cadet Original - Circle of Safety: Y
Re: Cub dies under load
Jonathan wrote:Motor needs to be rebuild
Hold on a minute on that one. How about a compression check first and also try all the other suggestions people have said?
Every home is a school, what are you teaching?
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- 10+ Years
- Posts: 4974
- Joined: Fri Oct 29, 2010 11:34 pm
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- 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: Cub dies under load
Check valve adjustment as a part of the tuneup.
Stan in LA (lower AL)
USAF & Reserves, Reg ARMY, ARMY NG (AL)
USAF & Reserves, Reg ARMY, ARMY NG (AL)
- Slim140
- 5+ Years
- Posts: 4908
- Joined: Wed Nov 22, 2017 6:24 am
- Zip Code: 00000
- Tractors Owned: .
1970 International 140
1972 International 140
1949 John Deere A
1993 Ford 4630 W/Loader
1965 John Deere 110
1961 Cub Cadet Original - Circle of Safety: Y
Re: Cub dies under load
Put a timing light on it as well. Walt ran good but lacked power. I tuned it up etc. & still lacked power. Put the timing light on it and fine tuned the distributor and you would have thought you put a new engine in it from a 140. It wasn't off much but when you start out with not much then not much taken away from that leaves drippings.
Every home is a school, what are you teaching?
- Rick Spivey
- Cub Pro
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Re: Cub dies under load
Is this a battery ignition distributor, or a magneto. If magneto, then weak spark will act like that. I had one that did it.
Rick Spivey
'52 Cub ("Great Personality") 148xxx
'48 Cub with FH ("Gunny Cub") 38xxx
'57 Lambretta (a slow work in progress)
'74 Triumph TR6 (Mama's toy)
'52 Cub ("Great Personality") 148xxx
'48 Cub with FH ("Gunny Cub") 38xxx
'57 Lambretta (a slow work in progress)
'74 Triumph TR6 (Mama's toy)
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