Guys thanks very much for all the pointers and links to the parts diagrams.

A warm Nylon washer was the culprit. I have included some photo's of the finished product along with the roll pin punches I purchased. They were a little expensive but they make it really easy to get stubborn roll pins out. I am sure they will come in handy for other jobs as well.

This Tecumseh again turned out really well. The engine starts from 1 pull cold like a well tuned engine should. I had to move it to a new base as the old base was rusted out.

I took it for a run today and it has plenty of power and will be good for another few years mowing!
[Linked Image]
[Linked Image]
[Linked Image]
[Linked Image]
[Linked Image]
[Linked Image]