Hi Deejay, CyberJack, BB, Firstly, thanks again for all your help so far...it is truly appreciated. I tapped the cotter and freed it up and had to use a rubber mallet to get the clutch housing off. It took a bit of effort to remove. I have cleaned all the parts up as per attached photos.
Engine Shaft (from a few angles) has some wear marks but doesn't look too bad from my nube standpoint.
Clutch main housing. Has a previous ding mark on the outside (NOT ME) but looks OK inside. The paint on the cutter clutch melted off as soon as I got some petrol on it so I removed it all and I will repaint it later. There are a few bur marks on the inside edge (hope you can make it out in the photos)
The inner cone has cleaned up pretty well.
The outer cone looks Ok...but once again, up to the experts
Spring and clutch key look ok although the key has a small ridge worn into the end.