I have actually seen the Rocker arm assembly cut by the belt due to operators trying to rough cut with the mower in raised position. The new RBT's don't suffer that issue but is still not designed to be used that way.
On the clutch I said to do a complete adjustment because often previous owners start tinkering with all the adjustments to try and solve the issue when it first appears. The brakes are too tight so they can't clutch all the way so they add oversized nuts behind the thimble on the clutch linkage to depress the clutch more. All along they had the wrong belt or simply a bad adjustment on the belt guard. The adjustments are pretty simple on the B10.
Edited by skunkhome, September 14, 2013 - 12:34 PM.