Well, now the engine seems to be running nicely, I thought I would get the clutch cover removed, both to fit an 18 tooth sprocket, and get the inner and outer cover off to my mate Big Al for polishing.
He's been busy recently refurbing an Italian coffee machine, it looks like something off a fairground ride! I digress.
As I suspected, nothing was as tight as it should have been, Most of the components came off easily, the clutch centre needed pulling off, I do not have a puller.
In the olden days, Quoting my daughter, my mentor who put me through my apprenticeship, used to say, 'what would you do on a desert island?', tapping me lightly on the swede with a spanner! So, I put my brain in gear.
Bearing in mind it is on a spline, not a taper, I don't think it will need much pressure to free it, so:-
I drilled a 8mm hole in the centre of the clutch cap, bolted it back on the clutch centre, slid a 8mm set screw @3" long into it, then put a thick washer on it followed by a nut, placed a small bit of scrap steel between the bolt end and the mainshaft, and tightened it up, tapped the bolt head, the threads went slack, so wound the bolt right in, pulling off the clutch centre.
After straightening the tab on the sprocket nut, I undid the big nut with my fingers!
I am pleased I have pulled this lot down for peace of mind, mostly.
Anyway, the 18 tooth sprocket is now fitted, and I have tested a piece of 'o'ring chain on it, NO, it will not fit, it binds on the inner casing, no matter what side the split link is fitted, ordinary chain will do then!
I'll keep you posted on further fun.