Through direct contact between these components and the tappets and in accordance with the movement of the shaft, the rocker arm is the component in charge of transferring the movement of the camshaft towards the exhaust valves and engine's intake. The pushrod is attached to one end of this offering, while the stem of an engine's intake or exhaust valve is connected to the other end. The pushrod is raised at the beginning of the procedure by the camshaft. Rocker arm then spins as a result of the pushrod pressing one end of the arm upward.