I bought an 86 Cadet that had running issues, the carburetor had to be set very rich to get it to run. Then it refused to run above an idle, come to find out the ignition points were physically broken so they would float when attempting to throttle up. New points and running better, but still needing to run rich. Then it refused to run above an idle again, this time we discovered the condenser wire was broken. I didn't think it would run at all without the condenser connected. ,repair the condenser wire and it runs great now. I thought I would share this learning experience on a couple of oddball situations on the same tractor!