IH Carb idle jet removal-what not to do

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staninlowerAL
10+ Years
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Posts: 4803
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)

IH Carb idle jet removal-what not to do

Postby staninlowerAL » Sun May 07, 2023 6:53 pm

Working on a spare IH carb and found the idle jet tube broken at the point between the two halves, I decided to try to remove the broken top end with the jet by drilling it with left hand drill bits (manually). I had removed the air adjustment screw previously but did not remove it before drilling. Short version of the story is the bit got jammed against the screw and broke about 1/4 inch of the bit off in the carb body. After some sage advise from the carb experts I removed the air adjustment screw, probed the area with a dental pick and tapped on the body of the carb with a wooden handle. Much to my delight, the broken bit fragment fell out of the body! All is well that ends well!!
broken bit1.jpg
Stan in LA (lower AL)
USAF & Reserves, Reg ARMY, ARMY NG
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SamsFarm
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Zip Code: 44410
Tractors Owned: 1968 Cub Fast Hitch
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L-F3 Spring Tooth Harrow
CS Bell No. 60 Grain Mill on a unmodified Fast Hitch Disk hitch prong
Home Made Fast Hitch Potato Plow
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Couple 1948 Cubs
172 Runner Planter
53 Fertilizer
Cub-3 Field Cultivator
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Cub-22 Sickle Bar Mower
Mechanical Transplanter with side mount barrel (needs a fast hitch adapter) :)

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Re: IH Carb idle jet removal-what not to do

Postby SamsFarm » Sun May 07, 2023 7:19 pm

staninlowerAL wrote:I decided to try to remove the broken top end with the jet by drilling it with left hand drill bits (manually).


Just to be clear, was drilling "manually" using your fingers, a pin vice, or a electric, air, battery operated hand drill, or one of those egg beater style hand drills?
1968 Cub Fast-Hitch
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staninlowerAL
10+ Years
10+ Years
Posts: 4803
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: IH Carb idle jet removal-what not to do

Postby staninlowerAL » Sun May 07, 2023 8:02 pm

No powered device of any kind. I do not own or have access to any of the tools you listed so I was limited to a very small vice grip type pliers to hold the bits.
Stan in LA (lower AL)
USAF & Reserves, Reg ARMY, ARMY NG
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Clemsonfor
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1952 Farmall Cub
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Location: Greenwood County SC

Re: IH Carb idle jet removal-what not to do

Postby Clemsonfor » Sun May 07, 2023 9:40 pm

staninlowerAL wrote:No powered device of any kind. I do not own or have access to any of the tools you listed so I was limited to a very small vice grip type pliers to hold the bits.

I understand what you said but just clarifying you really don't own a drill!!??
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staninlowerAL
10+ Years
10+ Years
Posts: 4803
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: IH Carb idle jet removal-what not to do

Postby staninlowerAL » Mon May 08, 2023 2:37 am

Yes, I own a drill. CRS. Not something that can be used for this application.
Stan in LA (lower AL)
USAF & Reserves, Reg ARMY, ARMY NG
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Gary Dotson
Team Cub Mentor
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Kubota B6200E
Kubota B6200HST
Kubota B8200HST-D
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Location: OH West Mansfield

Re: IH Carb idle jet removal-what not to do

Postby Gary Dotson » Mon May 08, 2023 7:27 am

Stan, you should pick up a pin vice, they don’t cost much an come in very handy. I don’t use mine very often but when it’s needed, it’s great to have.
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SamsFarm
501 Club
501 Club
Posts: 1853
Joined: Wed Jan 20, 2021 8:21 pm
Zip Code: 44410
Tractors Owned: 1968 Cub Fast Hitch
LF-1 Platform Carrier
144 Cultivators
L-F194 Plow(s)
F38 Disk
L-F3 Spring Tooth Harrow
CS Bell No. 60 Grain Mill on a unmodified Fast Hitch Disk hitch prong
Home Made Fast Hitch Potato Plow
54A Blade

Couple 1948 Cubs
172 Runner Planter
53 Fertilizer
Cub-3 Field Cultivator
Cub-189 Two Way Plow
Cub-22 Sickle Bar Mower
Mechanical Transplanter with side mount barrel (needs a fast hitch adapter) :)

Misc Belly Mowers

Wish List
International 100 Fast Hitch Blade
Mott Fast Hitch Flail Mower

Wish Wish Wish List
Fast Hitch Rotary Hoe
4E hammer mill
Location: Ne Ohio

Re: IH Carb idle jet removal-what not to do

Postby SamsFarm » Mon May 08, 2023 9:16 am

Starrett has some nice ones. You might find a deal at a flea market or swap meet or such!

https://www.starrett.com/category/111606#currentPage=1&displayMode=grid&itemsPerPage=12&sortBy=wp/asc

I have a small drill chuck that I made a 3/8" smooth shank adapter fit for use in a collet. But there have been a few times I used it just by hand! Handy!
1968 Cub Fast-Hitch
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