[jimTN]

Appears to be a std carb. Nothing to rebuild unless it has a rubber tip on the float needle and if it does, replace it. Biggest problem with carb. on Ts that have been setting for years is a rusty gas tank. If thats the case, the tank should be removed, cleaned and coated. I do not believe in putting a plastic filter in line because of the fire hazzard. The innerds of your stock firewall filter are available from most of the T parts peddlers and work well.