Good news!
I had another play around with the clutch lever screw thingo and at first, thought it was going to be a waste of time but then, for some reason, the clutch started grabing? I was doing all the adjusting and checking by turning the shaft/clutch housing by hand and I don't know what I did but all of a sudden, it grabbed. I had to tighten the screw a little to get the blades to disengage again but now it's all working great. And the engine is running better than ever!
I think I might change the oil a little more often from here on in. Once every 2 years obviously doesn't cut it.
One more thing though - When I was playing around with the clutch, I noticed that the shaft which drives the belt/blades (clutch drive shaft maybe?) was able to be pushed in and out about 10mm. It felt to me that this shouldn't be happening. It was like whatever holds the clutch drive shaft to the engine shaft was loose? Like I have stated previously, I don't have much of a clue about engines and the like and I can't afford the time or money to be pulling things apart to find out how they work. I'm hoping this is an easy fix if it is a problem/potential problem?
Hopefully I will be back here in the near future getting advice on where to start in restoring my old 33. I was thinking today that it looks in really good shape considering it's 50 odd years old. I would love to have it restored properly.
Thanks for your help Darryl and Andy.
