I'd rather work on the Cub

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radioguy41
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I'd rather work on the Cub

Postby radioguy41 » Thu Sep 13, 2018 2:49 pm

I have a Craftsman LT4000 lawn tractor since new (1993) and when the deck finally failed this summer I decided I should find a parts tractor. It turned out to be more difficult than first thought. There are 5 variations of the LT4000; battery under hood vs under seat, gas tank under seat vs under hood, Kohler vs B&S, slope hood vs flat hood, 18in rear tires vs 20in, and different combinations of all of them. Anyway, I finally found a non-runner that is an exact match (also 1993). Here comes the kissing-your-sister part - it only needed a fuel pump and now it runs like a champ so it's no longer a parts candidate. I decided to hang a blade on it that way I'd have one with a deck and one with a blade. Without going into too much detail let me just say the plow model is as unique as the early tractor version but with luck I found one. Then the fun began. Suffice it to say I'd rather work on the Cub. It raises and lowers with the deck stick so you better eat your Wheaties. I suspect the difficuly of lifting the blade with negative leverage is why it was superceeded so quickly.

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My 24412 plow-3s.jpg


My 24412 plow-14s.jpg


My 24412 plow-17s.jpg


My 24412 plow-19s.jpg
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Barnyard
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Re: I'd rather work on the Cub

Postby Barnyard » Thu Sep 13, 2018 3:40 pm

Sears had various vendors build their mowers. Two I know of were Roper and MTD. They all would build the same model number, but there were variations of each. It seems Sears had no exact specifications as long as each met certain criteria.
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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radioguy41
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1948 Farmall Cub (Cyrus)
1993 Craftsman LT4000
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Location: Lehighton, PA

Re: I'd rather work on the Cub

Postby radioguy41 » Thu Sep 13, 2018 4:10 pm

Yeah both of these were made by AYP (American Yard Products). All the MTD versions I've run across had B&S engines while all the AYP's had Kohler. I'll take the cast iron Kohler any day. :)
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Jim Becker
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Re: I'd rather work on the Cub

Postby Jim Becker » Thu Sep 13, 2018 10:31 pm

radioguy41 wrote:. . . It raises and lowers with the deck stick so you better eat your Wheaties. I suspect the difficuly of lifting the blade with negative leverage is why it was superceeded so quickly.

Is there any chance of adding a helper spring?

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radioguy41
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Posts: 387
Joined: Sun Jun 18, 2017 10:46 am
Zip Code: 18235
Tractors Owned: -
1948 Farmall Cub (Cyrus)
1993 Craftsman LT4000
1993 Craftsman LT4000 #2
Circle of Safety: Y
Location: Lehighton, PA

Re: I'd rather work on the Cub

Postby radioguy41 » Fri Sep 14, 2018 5:52 am

It's so tight underneath I don't know how you would do it. As you can see in the photos below, you're pulling up on those short ears which then uses the longer arm to pull down on the short end of the long bar pivoting the longer, heavier end with the blade attached upward. Whoever designed it had no idea how leverage works. Ground clearance was an issue as well. When the blade is up that longer arm is only 1 inch above the ground and when the blade is down that arm is only 1/4 inch below the engine pulley.

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My 24412 plow-3b.jpg


My 24412 plow-10b.jpg
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Re: I'd rather work on the Cub

Postby T-Mo » Fri Sep 14, 2018 6:05 am

The earlier Sears tractors (60s and 70s) were great tractors. And some of the 90s were good also. But, as mentioned, Sears used different manufacturers, AYP, MTD, Roper, Murray, etc., to build their lawn equipment.

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radioguy41
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Posts: 387
Joined: Sun Jun 18, 2017 10:46 am
Zip Code: 18235
Tractors Owned: -
1948 Farmall Cub (Cyrus)
1993 Craftsman LT4000
1993 Craftsman LT4000 #2
Circle of Safety: Y
Location: Lehighton, PA

Re: I'd rather work on the Cub

Postby radioguy41 » Fri Sep 14, 2018 6:23 am

Here's the original twin to the one above, also by AYP. This one I've had since new (1993). Still mows 1-2 times a week.

Tractor-2a.jpg
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Jim Becker
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Re: I'd rather work on the Cub

Postby Jim Becker » Fri Sep 14, 2018 9:44 pm

I don't know if either of these would work:
1) Put a compression spring so it pushes down/forward on the "pushes this end down" point.
or
2) Add a bracket and spring on the front to pull directly up on the push frame.


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