Newbie with lots of questions.

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repoguy
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Joined: Mon Apr 13, 2015 8:03 am
Zip Code: 34428

Newbie with lots of questions.

Postby repoguy » Mon Apr 13, 2015 8:21 am

Recently acquired what i was told was a 1948 farmall cub with a 3 blade belly mower, in an estate sale. There is no serial plate that i can find. I was told it was under the seat, which is missing( was replaced with a folding boat seat). Been slowly getting it back into working order. Runs, and was working well, but then i replaced the sediment bowl assembly because it would not stop leaking, after that, it still runs, but just bogs dies under any kind of load. Has the zenith carb. Took it apart and cleaned it really good. It'll start and idle fine in high rpm's for about a min, min n a half, then start sputtering. choke it down some, and it repeats the cycle. sometime it runs smooth longer than others, but never under load, always sputters n dies under load. Checked the timing and it was a little off, so i adjusted that, helped some, but still no change under load. points are good, plugs were dirty and old so i replaced them. Hard to get parts when i don't know exactly what i have, lol. So, here are the numbers i have been able to find on the tractor. Can anyone help me out with exactly what i have, and maybe help diagnose my issues please.

On Hydro lift on top of main tube
360719-r1

On block
251341 r7

On Main tube
351686-r2
l 2 x

zenith carb.
02 06
13794e
71523c93

I will upload some pics and i video of how it is running later today.

Thanks everyone.

staninlowerAL
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Zip Code: 36558
Tractors Owned: Cubs: (3)'49's, (1)'52, (1)'57 IH Cub LoBoy w/FH, (1)'72 154 Number Series Loboy, '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, '53 MM BG (offset), (2) '49 Avery V's, '56 JD 420C, with Blade and fire plow, '85 JD 850 (Yanmar) w/72" belly mower, '76 Yanmar 1500, Sears Surburban's, MTD's, Jeeps & other misc. "treasures"
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Location: AL (Southwest)

Re: Newbie with lots of questions.

Postby staninlowerAL » Mon Apr 13, 2015 9:12 am

Welcome to the forum and the best place to get Cub related answers. The numbers you posted are part numbers except for the one on the torque tube which also contains the casting code and will reveal the date, month and year that tractor part was made. Cub SN is on a tag on the right side of bolster, and engine SN is stamped on a machined surface of the block behind the carbuerator. The Zeneth carb was found on later model cubs. Color and shape of the hood is another clue as to vintage. Super A and A ID tag is located under the seat. That being said, sounds like you have a fuel restriction somewhere in the carb or fuel delivery system. Check for a full stream at the carb by removing the drain plug and allow about a quart to drain from the tank. If there is no slow-down in fuel flow, the restriction is probably in the main jet which will require cleaning. If you seperate the two halves of the carb, be very careful to not break the idle tube jet which screws into the top half and extends into the lower bowl half. If you have a slow-down of the fuel flow, it could be anything from a float/needle valve sticking, sediment, rust, gunk in the fuel tank, shutoff valve, sediment bowl, or even a plugged fuel filter that someone has added. Good Luck

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Stanton
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Tractors Owned: 1942 Farmall AV, serial #87025
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Re: Newbie with lots of questions.

Postby Stanton » Mon Apr 13, 2015 10:15 am

Welcome to the forum.

Go here for reference pics of where the serial number and casting dates are located: http://www.tmtractor.com/id/id_001.htm

Also check out the How To Forum (located on the main FarmallCub.com discussion page). There you will find many helpful hints and helps.
Stanton
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repoguy
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Zip Code: 34428

Re: Newbie with lots of questions.

Postby repoguy » Mon Apr 13, 2015 10:29 am

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Barnyard
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Re: Newbie with lots of questions.

Postby Barnyard » Mon Apr 13, 2015 12:21 pm

The hood, white grill and engine cast date points to a 1956.
It is common sense to take a method and try it. If it fails, admit it frankly and try another. But above all, try something.
- Franklin D. Roosevelt -

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staninlowerAL
5+ Years
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Posts: 2769
Joined: Fri Oct 29, 2010 11:34 pm
Zip Code: 36558
Tractors Owned: Cubs: (3)'49's, (1)'52, (1)'57 IH Cub LoBoy w/FH, (1)'72 154 Number Series Loboy, '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, '53 MM BG (offset), (2) '49 Avery V's, '56 JD 420C, with Blade and fire plow, '85 JD 850 (Yanmar) w/72" belly mower, '76 Yanmar 1500, Sears Surburban's, MTD's, Jeeps & other misc. "treasures"
Circle of Safety: Y
Location: AL (Southwest)

Re: Newbie with lots of questions.

Postby staninlowerAL » Mon Apr 13, 2015 1:18 pm

Don't be surprised to find the casting codes are not all the same since many of the parts of these tractors are interchangable. The best bet is to find the ones that are close to the same and find the engine SN for a comparison. You might have a cub that has several parts that have been swapped with others, sort of a "Johnny Cash-Cadilac, one piece at a time" situation. Looks like a pretty decient tractor but for safety's sake, recommended to get rid of the rubber fuel line to avoid gasolene on the hot manifold which almost garantees a fire. 5/16 steel brakeline is a good safe substitute and the carb/fuel shutoff threads are 1/2 x 20. Check the manuals at the top of the page for detailed parts lists, part numbers, operating instructions, service and intervals, etc. Stan
Last edited by staninlowerAL on Mon Apr 13, 2015 7:45 pm, edited 1 time in total.

RogerW
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Re: Newbie with lots of questions.

Postby RogerW » Mon Apr 13, 2015 2:27 pm

That is the first one I have seen with a u-joint in the steering shaft. Was that on later models?

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randallc
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1961 cub c2 belly mower and full blade. 48 cub manual lift with cultivators.
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Location: Witcherville, AR

Re: Newbie with lots of questions.

Postby randallc » Mon Apr 13, 2015 2:35 pm

Welcome to the forum from Arkansas. Check the fuel flow going to the carb. May be a restriction from the tank, also adjust your governor linkage going to the carb so it will maintain the set speed.
Guinea, 1951 Farmall Cub; Jumping Willy, 1949 Farmall Cub, 61 Cub, Scrapy, and 48 Cub Al, 48 cub, Billy D.
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repoguy
Posts: 4
Joined: Mon Apr 13, 2015 8:03 am
Zip Code: 34428

Re: Newbie with lots of questions.

Postby repoguy » Mon Apr 13, 2015 6:37 pm


Bob McCarty
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Re: Newbie with lots of questions.

Postby Bob McCarty » Mon Apr 13, 2015 6:54 pm

I agree with Randall. When you have to choke it to keep it running, you're not getting enough gas to the engine. Is there an inline filter? If the gas tank isn't real clean, you may already have debris back in the carb. There should also be a tubular filter in the Zenith that may or may not still be there. Whenever the carb is removed, you need to readjust the linkage to the governor. GSS-1411 Blue Ribbon Service Manual in the "manuals" section of the tool bar above gives the procedure.

Bob
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we need to think differently."
-Albert Einstein

repoguy
Posts: 4
Joined: Mon Apr 13, 2015 8:03 am
Zip Code: 34428

Re: Newbie with lots of questions.

Postby repoguy » Tue Apr 14, 2015 6:50 am

Thanks for all the reply's guys, very informative and a great help. Now if there were only enough hours in the day, lol. I will get on it as soon as possible n keep my post up to date.


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