Sometimes I really don't understand some PO's lack of attention to detail, or maybe just impatience...I have a tractor with an electric PTO that the PO welded the bearing inner race to the rest of the clutch so it would be on all the time. I think all I had to do to get the clutch working again (besides grind off the welds on the clutch) was to reconnect the clutch safety switch bypass wire that had worked its way out of the connector.
I've also had a couple of tractors on which everything was held together with nails and baling wire. And the one that every bolt the PO touched was finger tight...carb bolts...PTO clutch setscrews....head bolts....etc.