It runs off the mower PTO via a short belt that goes to a special mule drive that mounts in the middle of the tractor where the mower mounts. From there a long belt with a 1/2 a turn twist in it goes back to the tiller. If the mule drive is missing they are in the $100+ range if you need to buy one. Consider that in the purchase price as the mule drive is hard to find. Roger