Well, here's a shot of the now-running and somewhat useful 1220. It's a bit ratty, but it runs nicely and is proving to be quite useful around our little farm. I've removed the hydraulics as most of the linkages are missing. Besides, this is a runabout for the wife so the hydraulics aren't really needed anyhow.
Now a question about the drive pin: this one keeps working its way out when traveling over rough ground, causing the tractor to stop moving and requiring the driver to push it back in. I looked at the 1220 parts manual and it doesn't show any ball detent or other retention mechanism. How is the drive pin latched into the drive position so it won't work its way loose?