Farmall Cub

I have a 1949 and a couple years ago I put in a C 60 engine from a numbered. I believe the year was a mid 70s year. When I bought it the seller gave me a new jet for my existing carburetor. I believe the orifice was larger in diameter and he said I would get more performance from the newer engine using this plug in my existing international carburetor. However no surprise I lost that yet and was never able to install it. Would anyone know what that orifice diameter might have been and if I can purchase a jet of the size somewhere. Thanks.

You can probably order the jet from the dealer. You can find the rest of the information you are looking for and the reason you probably want to leave things well enough alone in this recent thread:
http://www.farmallcub.com/phpBB2/viewtopic.php?f=1&t=74036

The best way to find your lost jet is to purchase a new one. It will show up the next day.

Todd