Welcome to the Forum and to the Cub Family.
does anyone know how to remove a main metering jet that has broken inside of carb.
Well, you have come to the right place. I have not had to deal with that particular problem so far, but I do not think it is too hard a fix. If you have any left handed drill bits, that would work well - just use one smaller than the shaft size of the jet in a hand powered drill chuck and pop it out. Otherwise you may need to drill out using consecutively larger bits until you can pick out the threads with a dental pick or something similar. One of the other guys may have a better idea.
also does anyone know where i can find a new mmj?
Ahhh yup. Your local CaseIH Dealer or http://www.casetractorparts.com
. I would suggest though, that since you need the MMJ, you may as well get the complete Carb Kit from Case as the jet is in it.
also how can i rethread stripped out fuel inlet port?????
You really need to read this article on the Manual Server Lurker Carl's Carb Fixes
This will answer just about all of your Carb questions.
Couple things you need to do. One is to read this when you get a minute ok New Members and Visitors, Please READ
The next thing you need to do is to make sure you have the 3 main manuals that will help you with maintaining your cub and of course getting parts. These are available at Binder Books
, and are:
TC-37F Parts Manual
GSS-1411 Service Manual.
In the meantime, they are on the Manual Server at the link below. Hope this helps and again welcome to the Forum and to the Family