I have a 1964 MF-35 Gas Deluxe. I just replaced the plugs, condensor, rotor, and points. In so doing, I fiddled around with the timing a bit by twisting / turning the distributor housing. In so doing I noticed that the sputter the tractor has "always" had at high idle disappeared. But, I have noticed that I can rotate the distributor housing through several degrees with no appreciable difference in how the engine sounds. So, that has raised the question in my mind about tweaking the timing for optimum performance.
1. If I want to advance the timing, do I rotate the distributor clockwise or counter clockwise?
2. How do I know when it is optimal?
Thanks for any insights.