F14 Internal Carb Part - Question

Dennis78

New User
mvphoto47265.jpg

Wondering if anyone can tell me about the internal carb part I broke (see picture). It s from a 1939 F14.
I was taking it apart and getting ready for the cleaning and rebuild process when I accidentally broke this small tube. I think it s brass (or copper) and seems to go from the bottom of the carb into the top of the carb. None of the rebuild kits have this part included, so breaking it really stinks!
What does it do and how might I go replacing it?
Thank you for your help!
 
Looks to be the main jet pickup tube. Drilling it out will be easy finding a new one might mean making one. A Good luck
 
(quoted from post at 06:01:15 01/01/20)
mvphoto47265.jpg

Wondering if anyone can tell me about the internal carb part I broke (see picture). It s from a 1939 F14.
I was taking it apart and getting ready for the cleaning and rebuild process when I accidentally broke this small tube. I think it s brass (or copper) and seems to go from the bottom of the carb into the top of the carb. None of the rebuild kits have this part included, so breaking it really stinks!
What does it do and how might I go replacing it?
Thank you for your help!
That's pretty easy to make if you know somebody with a lathe. If you don't, contact me and I'll make you one.
 
(quoted from post at 11:31:29 01/01/20)
(quoted from post at 06:01:15 01/01/20)
mvphoto47265.jpg

Wondering if anyone can tell me about the internal carb part I broke (see picture). It s from a 1939 F14.
I was taking it apart and getting ready for the cleaning and rebuild process when I accidentally broke this small tube. I think it s brass (or copper) and seems to go from the bottom of the carb into the top of the carb. None of the rebuild kits have this part included, so breaking it really stinks!
What does it do and how might I go replacing it?
Thank you for your help!
That's pretty easy to make if you know somebody with a lathe. If you don't, contact me and I'll make you one.
Thanks Tim, I may take you up on that. But I ll try this first - I was able to find a piece of brass tubing online that matches the OD (1/8"). Not sure what the ID will be but I ll find out when I receive it. The one that broke has 1/8" (.125) OD and a wall thickness of about .015.
If I am able to get (or make) a matching piece of brass tubing and can drill it out does anyone know what is used to glue the tube into place? Some type of Carb glue material?
 
(quoted from post at 17:49:30 01/01/20) . Hmm this is all new to me. How would I press fit?
The interference would be less than .001", and brass is very malleable, so it would tap in with a dead blow hammer quite easily. If it's too easy, you would deform the tube just a little then tap it in.
 
Dennis, I believe that is the idle jet. not sure of replacement you could check with Rice Equipment may have it?
F-12 and 14 carb are plentiful. I would just find a carb not broken to rebuild, keep your old one for parts
I see them for sale all over CL has one for $25 I see many guys on FB with F-12/14 parts for sale.
I know Dwayne Hansford rebuilds for Rice check with him.
 
Actually it looks like YesterdaysTractors and Steiner both offer rebuild kits with this part included...? Hard to tell from the pictures of the kits. Guess I missed that when I made the kit purchase via EBay (from Marks Carb & Mag). Wish I knew of this site prior to making the purchase a few weeks back.
 
Dennis, What you see in the YT and Steiner picture is the float lever pin! No the kits do not come with the Idle Jet.
Best to find carb that has intact not broken jet and rebuild it. Or consult a rebuilding service to see if the jet is available for purchase
 
There is a online parts catalog for the F 12 & 14. It shows a couple different carburetors but I
could not determine what part you broke. It does look like a idle jet but I am not familiar with
those carbs. I just googled up download parts catalog for F12 and with a little monkeying around I
got it to come up. Twice in fact.
 
(quoted from post at 15:38:50 01/01/20) Dennis, I believe that is the idle jet. not sure of replacement you could check with Rice Equipment may have it?
F-12 and 14 carb are plentiful. I would just find a carb not broken to rebuild, keep your old one for parts
I see them for sale all over CL has one for $25 I see many guys on FB with F-12/14 parts for sale.
I know Dwayne Hansford rebuilds for Rice check with him.
Old Iron, since you asked me how the carb rebuild went on a different thread here is the answer. It went great!
After removing all brass parts (screws, etc) and cleaning the brass separately, I soaked the carb in phosphoric acid over night then flushed it clean with lacquer thinner, then air compressor. Some of the stubborn stuff I used a dremel with a tiny wire brush. Looks brand new. Ok on to the idle jet. I found supplies online - amazingly they were all on Amazon! Wire Gauge drill bit #31 to drill out the old one. 1/8" brass tube was $5 all I had to do was cut it to length, the O.D. and I.D. matched exactly. The new brass jet fit very snuggly but I used a drop of "Seal All" fuel resistant adhesive to ensure it doesn t move. Put the rest of the carb back together and I m excited to try it!
Thanks everyone for the help and support with this carb!
 
All the idle jets that I have ever seen in tractor carbs had a very tiny orifice on one end, even though they had a bigger opening on the other end. If you just used straight 1/8" tubing, I'd be afraid your idle jet is quite oversized, but I could be wrong.
 
(quoted from post at 11:23:39 01/11/20) All the idle jets that I have ever seen in tractor carbs had a very tiny orifice on one end, even though they had a bigger opening on the other end. If you just used straight 1/8" tubing, I'd be afraid your idle jet is quite oversized, but I could be wrong.
Thanks for the comment ih560. It was impossible to tell what the end I drilled out looked like. Not even the old parts catalog I have shows that level of detail. A repair house I contacted didn t have any info on it either. Guess I ll just have to see how it runs when the time comes. But first I ll be doing an engine overhaul and all that jazz...so it ll be summer 2020 until I yank the crank. In the meantime if anyone has a junker f12/f14 carb laying around I d be forever in debt if you can figure out if the idle jet is just a straight 1/8" tube.
 
the idle metering tube has a small hole drilled in the bottom at a right angle to the tube, there is a passage in the carb that this hole must line up with, without it your going to have starting/idle problems. I believe you can modify one from an H carb to replace it.
 

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