Kick Start Mechanism | How Motorcycle Engines Engage and Start Using Gear and Lever System

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This video demonstrates the working of a motorcycle kick start mechanism, showing both the internal gear operation and the actual foot kick starting process. In the first part, the engine casing is open, revealing the gear train, kick start spindle, and engagement system. When the kick lever is pressed, a ratchet or pawl mechanism engages with the primary gear, rotating the crankshaft and initiating the compression stroke in the cylinder. Once the lever returns, the engagement disengages, preventing reverse motion. The second part shows a rider using the kick lever on the motorcycle, where the applied foot force is converted into rotational energy to start the engine.

This mechanism is a manual starting system found in many motorcycles, especially older or simpler models. It is reliable, does not depend on a battery, and works by mechanically transmitting energy from the rider’s foot to the engine crankshaft through a series of gears and springs, enabling the combustion process to begin.

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