[BRENT in 10-uh-C]

While I am not a proponent of using two hands, I do think it is worth mentioning that everyone should take note of this "Cranker's" hand position. If the engine were to 'kick', it should be able to release from his hands suddenly without jerking a thumb off.

One other thing that I learned the hard way that ultimately caused me to have Rotator Cuff surgery on my cranking arm is that the technique should not be to jerk the crank quickly thru rotation, but just to pull slowly and steady past the piston cycle. Since the cranking stroke is generally ¼ of a turn -or one piston compression cycle, then there is not any advantage to jerking it quickly. This is why even petite ladies back in the day were capable of hand-cranking a Model-A (or Model-T) engine.