Yesterday I picked up my first walk behind. It's a Western Auto Wizard Tractor built by EDCO manufacturing. I have stripped everything off the engine and can't find any serial numbers. When I was pulling the apart I took a chunk out of the side of one of the large pulleys (that will be interesting to fix). Right now I have the pieces soaking in apple cider vinegar to de-rust them. The tank is rusted on the inside. I'm hoping this will take care of it.
I'm hoping the guy at the lawnmower shop can identify the carb so I can get a new diaphram for it. Everything else seems to be in working order. It doesn't run, but it has good compression and the piston/cylinder looks good. I'll try to post pics.