Cub Timing Mark

Jerry

First of all, there is no need to know where a retarded timing point is located. In fact, no mfg would make that mark. Lots of value in knowing where the advanced timing mark is. That is where some use a timing light.

Consequently, the first mark as it passes the pointer will be the advanced position because all engines fire before top-dead-center while running. The second mark will TDC. When the engine is not running, make your ignition deliver at TDC. The ignition system will advance itself when rotated at speed.

I time tractor engines by ear. Run the engine to high idle and rotate mag or distributor till the engine runs best. This is one of the reasons why dealers own dynos.

I would rather teach someone to think than give him an answer he will soon forget. Chances are he won't have to ask this question again. He will figure it out by himself. On top of that he will enjoy his tractor more if he understands how it works.

We get a fair number of lazy people on this board who can't be bothered to think or do research.

I think it is unlikely that I will offer anymore help in the future.