Used to help my dad repair them a long time ago. Don't know what kind you have but some had a shaft that went up to the wringer that turned in one direction only and makes a good pulling winch. Can be made to go both ways with a reversible motor. the other output ran the adgator sp which was a back and forth motion. that worked good for a saw drive. had one hooked up to a bucking saw for cutting logs. cut lots of logs but wasn't fast. Dale