For years I've had problems with the variable speed pulley vibrating on my ancient Bobcat 440. It was the same with the original Onan and the new repower Briggs. Obviously the brass inner sleeve was worn, probably from some PO running it loose. I tried several ways of fixing it. Finally I decided that my only options were having a new inner sleeve machined or finding a way to center the assy on the shaft. 3 set screws, equidistant apart, as far out on the shaft as I could get them made all the difference in the world! It's reduced the vibration from me worrying it'd shake the bearings out of the engine to just a slight wobble. The shale was so bad before it broke the exhaust manifold from the weight of the muffler, and it was getting worse. It would move enough that the set screw holding the pulley on the shaft would loosen up in a matter of minutes causing the pulley to walk and ruining a $100.00 drive belt. Not anymore! Don't know why I didn't think of this before.
I'll never get my money back out of this skid steer, but it's the perfect size for my low ceiling barn.
I'll never get my money back out of this skid steer, but it's the perfect size for my low ceiling barn.