Thanks Bruce - it looks much the same as many other Rovers of that era, at least in the area we are concerned with.
![[Linked Image]](https://www.outdoorking-forum.com.au/forum/uploads/usergals/2014/03/full-2772-15534-rover_rancher_53177_cutter_disk.png)
The area in the red circle shows the cutter disk and how it is mounted. At this point I don't understand how Item 24, the disk boss, works and how the disk mounts on it. Also, there is no reinforcing washer underneath the disk, but the disk shows an un-pitted area the size and shape of such a washer on its underside. As Julius Sumner-Miller liked to say, "Why is it so?"