This past summer I noticed my IH784 540 pto might be weak. I was running a 3 point disc mower thru hay and had to stop several times because the pto was slowing down as it was encountering heavier hay. The engine never bogged down, the pto rotations just slowed. My other tractor, rated at 55 hp (10 hp less than the 784) has no trouble at all running the mower thru the same hay. I also noticed the same sort of thing while it was running the square baler. Does this mean my pto clutch needs replaced? Could it be something else? Otherwise the tractor runs like a champ. I hope it is the pto clutch. $100 for new kit and you tube video show this to be a relatively easy fix.