Help identifying this carburetor on 1963 cub

[Paul 300 U]

Yes, another 63 cub question! Actually a 2 part question.
My cub fuel bowl leaked at the connection to the gas line and the shut-off doesn't work. After tinkering, I bought a new bowl with the "L" shut off handle vs the current "T" style handle. I read somewhere the bowl assembly with the L style handle are more reliable.

The male end on the current fuel line is now too small for the new brass female opening in the new bowl assembly. In the process of trying figure out how to correct this I read that a copper fuel line isn't the best idea. I'm paranoid about fire so I figured I'd purchase a steel line. Maybe I can get lucky and purchase a steel line that will also fit my current carburator and the new bowl assembly.
Step one is identifying the current carb. There is no tag I can see. This tractor has horizontal exhaust. Any help on connecting the steel line to the carb and bowl would be appreciated as well. I've attached pics of carb, tractor serial number and new bowl assembly.
Thanks as always! Paul

 

[BarnyardEngineering]

The "tag" is right there in the first picture. It's the IH carb. If you do a little quick research you'll find out that there was only one IH carb made for the Cub. It's not like there are different versions that require different carb kits.

Your new sediment bowl is designed to accept a straight piece of 5/16" steel tubing. Stuff it in and snug it down.

Copper work hardens with vibration. Not the best material to use.

 

[Fritz Maurer]

Yes, another 63 cub question! Actually a 2 part question.
My cub fuel bowl leaked at the connection to the gas line and the shut-off doesn't work. After tinkering, I bought a new bowl with the "L" shut off handle vs the current "T" style handle. I read somewhere the bowl assembly with the L style handle are more reliable.

The male end on the current fuel line is now too small for the new brass female opening in the new bowl assembly. In the process of trying figure out how to correct this I read that a copper fuel line isn't the best idea. I'm paranoid about fire so I figured I'd purchase a steel line. Maybe I can get lucky and purchase a steel line that will also fit my current carburator and the new bowl assembly.
Step one is identifying the current carb. There is no tag I can see. This tractor has horizontal exhaust. Any help on connecting the steel line to the carb and bowl would be appreciated as well. I've attached pics of carb, tractor serial number and new bowl assembly.
Thanks as always! Paul

No tag, the numbers were stamped in the upper casting to ID the different versions of this carb.
Can't tell if the top half was replaced or just really well cleaned. If replaced there's probably no number on it.

 

[grandpa Love]

It's an IH cub carb.....

 

[grandpa Love]

No tag, the numbers were stamped in the upper casting to ID the different versions of this carb.
Can't tell if the top half was replaced or just really well cleaned. If replaced there's probably no number on it.

I've never seen numbers stamped on the IH Cub carb .....now I have to go to the shop and check......my wife,the carb builder,says there ain't any??**** UPDATE****. My wife is correct ( I'm not surprised) no numbers

 

[grandpa Love]

Yes, another 63 cub question! Actually a 2 part question.
My cub fuel bowl leaked at the connection to the gas line and the shut-off doesn't work. After tinkering, I bought a new bowl with the "L" shut off handle vs the current "T" style handle. I read somewhere the bowl assembly with the L style handle are more reliable.

The male end on the current fuel line is now too small for the new brass female opening in the new bowl assembly. In the process of trying figure out how to correct this I read that a copper fuel line isn't the best idea. I'm paranoid about fire so I figured I'd purchase a steel line. Maybe I can get lucky and purchase a steel line that will also fit my current carburator and the new bowl assembly.
Step one is identifying the current carb. There is no tag I can see. This tractor has horizontal exhaust. Any help on connecting the steel line to the carb and bowl would be appreciated as well. I've attached pics of carb, tractor serial number and new bowl assembly.
Thanks as always! Paul

"Paranoid about fire" ........drop by your local home depot, Lowe's or and place that sells lawn mowers, lawn tractors or zero turns........ every single one has rubber gas lines. It's funny to me that folks worry about Farmall tractors bursting into flames. They run cooler and vibrate less than any zero turn. I think it's just another myth

 

[BarnyardEngineering]

"Paranoid about fire" ........drop by your local home depot, Lowe's or and place that sells lawn mowers, lawn tractors or zero turns........ every single one has rubber gas lines. It's funny to me that folks worry about Farmall tractors bursting into flames. They run cooler and vibrate less than any zero turn. I think it's just another myth

The reason to not use rubber fuel lines on a cub is the proximity to the exhaust manifold, especially if you have an underslung exhaust.

 

[Fritz Maurer]

 

[Jim Becker]

All the fittings should be the right size for 5/16 tubing. Brake line from parts store come with the right nut but not the small ring that compresses on the tube (hardware store item). If the brass fitting in the bowl is wrong, maybe you can reuse the old one, if there was a separate part on the old strainer.

The part number on the IH carb is exactly where Fritz pointed, about where the guys that think they can fix it with a hammer decide to aim. They are hard to find/read, even harder to take a picture. Here are 2 examples.

 

[grandpa Love]

All the fittings should be the right size for 5/16 tubing. Brake line from parts store come with the right nut but not the small ring that compresses on the tube (hardware store item). If the brass fitting in the bowl is wrong, maybe you can reuse the old one, if there was a separate part on the old strainer.

The part number on the IH carb is exactly where Fritz pointed, about where the guys that think they can fix it with a hammer decide to aim. They are h

All the fittings should be the right size for 5/16 tubing. Brake line from parts store come with the right nut but not the small ring that compresses on the tube (hardware store item). If the brass fitting in the bowl is wrong, maybe you can reuse the old one, if there was a separate part on the old strainer.

The part number on the IH carb is exactly where Fritz pointed, about where the guys that think they can fix it with a hammer decide to aim. They are hard to find/read, even harder to take a picture. Here are 2 examples.

Going back to the shop.....we ain't ever seen numbers on any cub carb. Will take another look, maybe use a magnifying glass

 

[BarnyardEngineering]

All the fittings should be the right size for 5/16 tubing. Brake line from parts store come with the right nut but not the small ring that compresses on the tube (hardware store item). If the brass fitting in the bowl is wrong, maybe you can reuse the old one, if there was a separate part on the old strainer.

The part number on the IH carb is exactly where Fritz pointed, about where the guys that think they can fix it with a hammer decide to aim. They are hard to find/read, even harder to take a picture. Here are 2 examples.

The fitting on these aftermarket bowls is some kind of 1-piece compression fitting with no ferrule. (That's what the brass part you get at the hardware store is called, for those playing along at home.) The ferrule is kind of built in. They work somewhat okay.

Unfortunately the original fitting doesn't fit in the aftermarket bowl.

 

[DoubleO7]

Going back to the shop.....we ain't ever seen numbers on any cub carb. Will take another look, maybe use a magnifying glass

smear some black paint over the surface and wipe it off with dry cloth. Maybe the stamped numbers will fill in and appear.

 

[Paul 300 U]

Thank you everybody for your replies!
I asked about carburator identification because when looking for the steel lines on line the parts description uses words like 'does not fit certain models' and does not fit zenith carburators and only use with horizontal exhaust'. I assumed maybe that has to do with numbered Cubs but figured it'd be better to ask here.
Great information on copper vs steel vs rubber fuel line. (non metal)I often asked myself why does so much equipment use rubber. I've decided to go with new steel. I think I've got a grip on connecting the lines to the carb and the bowl. Learning that you might not necessarily get/use/need a ferul on newer equipment was very helpful.
Like it or not I'm sure I'll have more questions as I progress. I also need to update my other post on the leaking head gasket.
Thank you all for your help and have a wonderful Christmas and New Year! Paul