1931 Model A starter help.

[Marshall V. Daut]

And be sure the ignition key is OFF when you rock the car in gear! It's easy to forget to turn it off when the starter locks up and you raise the hood to diagnose the problem. Should you rock the car in gear with the key still on, there's a chance the engine will start and the car takes off. 'Hasn't happened to me, but I'm sure one of the millions and millions of Model A owner in the last 85 years had this happen!
Marshall