I am always reading how people are replacing their pto clutches on their mowers. Had a buddy do his at 290 hours. See people getting 600 - 1000 hours having to replace. I run 2 Hustler super z 72", one has 2570 hours original clutch. The other has 2830 on it and had to just replace. My stander 36 has 1800 hours with the original clutch. Just taking a survey almost. Or what I am doing right.