What is the most important safety rule while operating a PTO power transfer?

1. The power transfer should only be operated when the engine is already hot.
2. The power transfer should not be operated while driving, but only when the tractor is standing.
3. The power transfer should not be operated without the supervision of an additional operator on the ground.
4. Correct answer: Stay away from the moving parts of the tractor and of the attachment.

WhyThe main rule when working with a PTO is to stay away from the moving parts of the tractor and the attachment.