Posted 9/22/2016 05:04 (#5542292 - in reply to #5542019) Subject: RE: Mystery ball bearing found on 7720 above cyl. Pully?
My best guess would be secondary countershaft.
Just did the primary countershaft coming right out of the engine on my 7720 and when I took the bearing apart and the balls were about that size, but that would be the other side of the machine.