The development of the power take-off shaft transformed the tractor from a basic towing vehicle into a dynamic power source. By drawing mechanical energy directly from the engine transmission, the PTO operates external equipment like rotary tillers, balers, and mowers. This innovation eliminated the need for separate implement motors, making field machinery cheaper, lighter, and far m... https://www.bigbizstuff.com/articles/the-ultimate-used-tractor-buyers-checklist-for-small-farms