I got some time to take this thing apart last night. It was nothing to disassemble, remove the three nuts and it splits in half and everything is exposed. This clutch has two bearings in it and I found the upper one to be a little rough. I took the dust covers off, cleaned it up and found nothing wrong with it. Repacked with new grease it and its smooth now.
This clutch works like an A/C clutch on an automobile, but three times the size. The Cub PTO clutch that Dale illustrates appears to have a replaceable clutch plate (where the Belleville spring is attached). My clutch has no listings for OEM parts unless you search on-line for aftermarket and so for that’s bearings only.
Parts for these commercial grass cutters are expensive. I own two of these,a Snapper Pro and Ferris. I found out the parent company for these machines is Briggs & Stratton and the parts between the Snapper and Ferris are the same. Figure that one….
Thanks again for all your help.