I should have said running wells I guess. I had pto gear heads on our wells before I had actual power units for them. I also used a pto centrifical pump on a couple of wells. Those tractors might run day and night for several days just being shut down to check the fluids and change irrigation sets. I had a 500 gallon propane tank hooked to them. I have used the two 4020's, two 4520's and a 4430 on wells.