How does Inertia starter motor work?

An inertia starter motor operates by using a flywheel that is spun up by an electric motor. When the starter switch is activated, the electric motor engages, causing the flywheel to rotate rapidly. Once sufficient speed is reached, a spring-loaded mechanism engages the pinion gear with the engine's flywheel, allowing it to crank the engine. After the engine starts, the pinion gear disengages, and the electric motor stops.