i mowed my lawn with my 721D with the 9361 deck.. everything went well and I did not see or hear any problems. However, when i removed the deck cover to blow out and clean the inside area after mowing, I discovered one of the idler wheels had essentially been destroyed from the inside out.. by that I mean the outside of the wheel was intact but the inside was gone... as I said before I had not detected any issues when mowing. I have ordered a new one but wondered if anyone has experience with this kind of repair. Does the fact the wheel was destroyed from the inside out, give anyone insight as to what might have caused this and what I should do to insure that it doesn't destroy a newly installed one? I don't want to put the new one in and have it wrecked seconds later.. so if anyone has had experience with the causes of this part failing, I would love to hear your thoughts... including if its just that eventually they just DO fail and that happens when they outlive their useful lives.. I am enclosing a graphic of the part ( part #9) and, if anyone wants, I can send a picture later of the part as it looks now .. thanks for your time....
Geoff
Geoff