The movement of plate C presses the spring E, Which in the end presses the clutch plate D within the flywheel towards the spring G. The effective electric powered starter motor does the turning. Its shaft carries a small pinion (equipment wheel) which engages with a large gear ring round https://starterparts47901.amoblog.com/the-fact-about-engine-starter-that-no-one-is-suggesting-57052397