Starters are electric motors responsible for initiating combustion engine rotation to facilitate startup. Typically mounted to the engine block or transmission, they utilize a pinion gear to engage the flywheel ring gear. Operation involves high-current draw from the vehicle battery, controlled by the ignition switch and solenoid. Modern starters often incorporate pre-engaged designs for smoother, quieter operation and reduced ring gear wear. Key specifications include voltage, amperage draw, pinion tooth count, and rotation direction.