Hmm, this one appears to be closer to a M12, I need to bring my thread gauge home from work. The manual I got with the tractor may show it, if I can find it.
It is 4 wheel drive. I bought this thing a few years ago for I think $500. It was in a garage that burned down around it. Lots of little problems. No plastic or wiring left on it. It even melted the aluminum pistons in the loader cylinders. But it does run and works.