carburator cleaner

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Furrow
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carburator cleaner

Postby Furrow » Sat Dec 29, 2018 9:11 am

Should have known better, SEARCH FORUM before working on something. Took carb apart and broke off filler tube flush with base, tried to get the threaded part out gently with extractor, buggered that up. Got a 3mm x .50 tap on order, is this the way to go? Any ideas? I should have just kept shutting fuel off like always to stop from leaking. Just got my torsion springs on barn door fixed so I can get the Cub out to plow, now I'm dead in the water again. One thing I'm thankful for...... Still haven't had enough snow up here near Buffalo to plow!

Jim Becker
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Re: carburator cleaner

Postby Jim Becker » Sat Dec 29, 2018 9:20 am

That is a 4-48 thread, not quite the same as 3mm x .50 .
viewtopic.php?f=1&t=96160

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Don McCombs
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Re: carburator cleaner

Postby Don McCombs » Sat Dec 29, 2018 9:58 am

Some on here will be shocked to hear me say this, but here goes...

My recommendation is for you to purchase one of the Chinese knockoffs to temporarily replace your IH carb. Once you get yours fixed, put the IH back on and keep the knockoff for a spare. Prior to installing the Chinese one, make sure the fuel inlet screen is installed and check the float settings. Also, be sure to reset the governor linkage per the service manual. If you're uncomfortable repairing the idle tube yourself, there are several members here who offer that service.

https://www.ebay.com/itm/Carburetor-Kit ... 2749.l2649
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Intergalactic Harvester
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carburator cleaner

Postby Intergalactic Harvester » Sat Dec 29, 2018 10:18 am

I have a pile of carbs sitting around here somewhere in the container. Let me see if I have one for the cub. Haven't gone through them all. I'll let you know if I find something...
"There is no hunting like the hunting of man, and those who have hunted armed men long enough and like it, never cared for anything thereafter" - Hemingway

Semper Fi

staninlowerAL
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Re: carburator cleaner

Postby staninlowerAL » Sat Dec 29, 2018 10:46 am

Furrow wrote:...Took carb apart and broke off filler tube flush with base, tried to get the threaded part out gently with extractor, buggered that up. Got a 3mm x .50 tap on order, is this the way to go? Any ideas?......
:Dito: on Don McCombs advice. The broken part is the idle jet tube. Use left hand drill bits, hand drill (no power drill) to remove the broken remains. It may catch in the metal and back itself out. Chase/clean the threads as Jim Becker stated. You can purchase a new idle jet from McDonald Carb or others for about $20. Good Luck. Edit: Harbor Freight has a small left hand drill bit set for less than $20.

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Glen
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Re: carburator cleaner

Postby Glen » Sat Dec 29, 2018 8:40 pm

Hi,
The 2 halves of the IH carburetor have to be pulled straight apart, to avoid breaking the idle tube.

Below is a listing at TM Tractor for a new idle tube, you can see a pic of it there. They have other carb parts also. :)

http://www.tmtractor.com/new/fl/384fp.htm

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Re: carburator cleaner

Postby jsfarmall » Sat Dec 29, 2018 9:50 pm

For a quick fix get the straw from a spray can. Carb cleaner, wd 40, etc. Cut it to length and chamfer one end to fit in the broke off end. That will get you going till you come up with a a permanent solution.
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Re: carburator cleaner

Postby Scrivet » Sun Dec 30, 2018 12:13 pm

jsfarmall wrote:For a quick fix get the straw from a spray can. Carb cleaner, wd 40, etc. Cut it to length and chamfer one end to fit in the broke off end. That will get you going till you come up with a a permanent solution.

This MIGHT work if the calibrated orifice is still in the threaded end, but since the original post said
Furrow wrote:..... tried to get the threaded part out gently with extractor, buggered that up. ........
I would think it's beyond adding a straw. I have never tried but have heard of them working fairly well with the tube broke off, as long as the calibrated orifice is intact.

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Re: carburator cleaner

Postby Jim Becker » Sun Dec 30, 2018 12:30 pm

Scrivet wrote:. . . I have never tried but have heard of them working fairly well with the tube broke off, as long as the calibrated orifice is intact.

I suspect it also depends on the bowl gasket providing a good seal. Otherwise it will be drawing in air rather than gasoline.

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Re: carburator cleaner

Postby Bob McCarty » Sun Dec 30, 2018 12:56 pm

Scrivet wrote: I have never tried but have heard of them working fairly well with the tube broke off, as long as the calibrated orifice is intact.

I agree, the orifice in the threaded end is what matters, not the tube.
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jsfarmall
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Tractors Owned: 1948 Cub "Trusty"
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1948 Cub "Bob"
1948 Cub "Sallie" (wife's tractor)
1965 IH Cub "Annie"
1943 Farmall H
1953 Farmall Super M (granddad's tractor)

Re: carburator cleaner

Postby jsfarmall » Sun Dec 30, 2018 2:08 pm

Have done it several times. Some with the tube broke off in it, some with the threaded hole all screwed up. All worked good. Either way what have you lost, 5 minutes?
1948 Cub "Trusty"
1948 Cub "Rusty" mower tractor, trimmed ear dash
1948 Cub "Bob"
1948 Cub "Sallie"
1965 IH Cub "Annie" mower tractor,
1943 Farmall H,
1953 Farmall Super M

Furrow
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Zip Code: 14420

Re: carburator cleaner

Postby Furrow » Sun Dec 30, 2018 5:15 pm

Thanks for all the posts, carb is back on and running good. Reamed out with left handed drill, tapped with 3mmx.50, screwed broken tube in as far as I could, had about 1/64 of thread. Had already ordered tube from yesterday's tractor, $12 with shipping. Now I'm sitting in the house wondering if I shut the gas off.

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Shane N.
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Re: carburator cleaner

Postby Shane N. » Sun Dec 30, 2018 6:17 pm

Furrow wrote:Thanks for all the posts, carb is back on and running good. Reamed out with left handed drill, tapped with 3mmx.50, screwed broken tube in as far as I could, had about 1/64 of thread. Had already ordered tube from yesterday's tractor, $12 with shipping. Now I'm sitting in the house wondering if I shut the gas off.

For future reference and others that don’t read whole threads, like Jim Becker said, the tube is theaded 4-48.

Glad you got it going.
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