How long has this tractor been sitting? Checked, your last post was 1 1/2 years ago.
First thought is carburetor is "crudded", varnished up from sitting for a long period of time. Cheap try, container of carburetor in fuel tank.
Edit. Should read carburetor cleaner in fuel tank. If that doesn't work, post back.
Last edited by Eugene on Sun Jul 13, 2014 9:16 pm, edited 1 time in total.