Got some time to work on the ditch witch today. Found this setup for a recoil starter rope instead of a sheave type. Of course the flyweights are rusted and unmovable so have to clean and lube that. I put a socket on the crank bolt and was able to get it to turn, but only about a quarter turn. Can turn it back and forth easily but only about that quarter turn. After that quarter turn in either direction it stops hard. I have the sparkplug out so nothing is compressing. Does anyone have any ideas about what is stopping the crank turning?