Which components are part of a mechanical governor system?

A mechanical governor system is designed to regulate the engine speed by automatically adjusting the throttle position based on the load applied to the engine. Each of the components listed in the correct choice plays a specific role in this process.

The cam gear and governor gear work together to facilitate the motion transfer from the engine to the governor mechanism. The flyweight is crucial as it moves outward when the engine RPM increases, providing feedback to the system. The cup holds the flyweights and is affected by their movement, contributing to the overall function of the governor. The governor shaft connects these components and transmits their movements. The governor lever and link are responsible for transmitting the motion to the throttle plate, which directly controls the airflow into the engine and, subsequently, the power output. The throttle linkage connects the governor mechanism to the throttle system, allowing for smooth operation and response to the varying loads. Finally, the governor spring provides the necessary tension to keep the flyweights in check and returns the system to its default position when the engine speed drops.

This array of components works in concert to maintain the desired engine speed, making the mechanical governor an essential part of small engine technology. The other options listed do not pertain to a mechanical governor system: the first option includes components