The starter ratchet (one-way clutch) connects the starter drive to the crankshaft during starting and releases it once the engine has started. Fits 125–150 cc 4-stroke scooters. Country: China.
Replace it if the starter spins but the crankshaft does not turn, you hear a crunching sound when starting, or the ratchet slips. Immediately check the ratchet spring and the starter drive gears: they wear together.
