I bought mine used with 200 hr and it now has 240hr on it. I abused the last 40hr digging and moving a lot of dirt and it's a strong clutch. Knock on wood. I did have to adjust it when I first bought it. Sorry this is no help.
Good luck
Tony
Let us know what happens. I've been looking at buying a 6000 to help clear a bunch of mesquite trees and prickly pear, mow and dig out the tank a little more.