A key way pulley is a mechanical component used in various machinery, including power tillers and water pumps. It serves as a means to transmit rotational motion from the engine or motor to other parts of the tiller, such as the tines or blades that perform the tilling action. This design ensures that the pulley rotates in unison with the shaft, preventing slippage and ensuring efficient power transfer. This key way pulleys play a vital role in connecting various drive systems. They help manage how power is distributed from engines with different RPMs (revolutions per minute) to achieve desired tilling speeds and efficiencies. Properly functioning pulleys contribute significantly to a tiller’s overall effectiveness in soil preparation tasks.