Thanks Norm,
The pulley doesn't spring back, so it is an inside job. I have a new o-ring I ordered, just in case, so I will fit that one at the end of the operation.
I also have a new o-ring for the front of the carby, which I will inspect first. After that I will take it apart from the side and see what I can see with the throttle cable. I will follow the gregorys guide to the letter, and if I have any issues, I will let you know. Something is definately not right with it though. The cable will not allow the throttle control to go back to start, and even going the other way towards run, it is creaky and hard to push.
