More info:

The engine is good, it ran strong right up until the recoil/pull start assembly quit on me. But I haven't cleaned it up yet, so it's still dirty.
The drive unit on the rear axle is good but I can't figure out how to get it off the chassis so I'm leaving it on for now.
The Chassis is fine but there's a rust hole in it so it's not perfect.

The bad parts you don't want:

The wheels are nearly bald.
The recoil/pull start assembly is toast.