I have a Wallenstein BX-42 on my B7610. Certainly on the lower end of HP capability. I run it with the PTO @ 960 RPM to give it the additional inertia for larger pieces. I would not put max size of hardwood in, that is firewood. I do use the full throat capacity for deadwood or pine. No problems at all. Our main use is to clear the hedgerows around the meadow of brush,usually 1"-3"