Bill: Thanks again. I don't have a ball on the flywheel, but I will assume the circle is the same thing and go with that. I think 61 or 62 was the last year this engine was produced, so maybe by the time they built the one I have, they changed the system a little. I'm sure a shop manual from the proper year would tell me for certain, but I don't want to buy one just for that one piece of info. Allen
