Oliver 241 Disk

The disk coulters appear to be worn down substantially from their original diameter. I would like to correct this. What is the standard coulter diameter for this disk? What is a good source for them? What is the center hole configuration of the coulter--square, round, etc?

Thanks in advance.

In our area Cockshutt and Oliver dealers were known for their reputation in specing out a disk. It didn't matter what color the tractor up front was the disk was orange or green, and not Deere green, nor Allis orange.

We never had a decent disk around the farm--seems like a disk was an always an after thought. I got tired of trying to keep Dad's POS 12' JD disk together and went and got this Oliver. We are not serious farmers, but some neighborhood guys are. Would like to become the neighborhood DDM (Designated Disk Man). The Oliver 10-footer is a nice match behind the 460. Can motate very comfortably in 3rd gear with it. I detest having to gear down with a disk overmatched for the tractor--wheel spin, fuel use, no dirt casting action. You know the drill. Now I just need to get the TA fixed--been flappin' my crack about that for two years!