I think HD rents different sized units. Not all "3 inch chippers" are created the same so I found out!

The HD unit was a pull-start 8HP Honda with a faulty clutch belt, the Taylor Rental unit was a 22HP elec. start Subaru with a centrifugal clutch.
More nonsense at:
http://67.15.68.71/~andrewco/gallery/Trees?page=1