Starter freewheel -PIAGGIO- Vespa ET4 125 (ZAPM0400000001001), Aprilia Mojito 125 (ZD4PM), Piaggio Hexagon 125 (ZAPM15000), Piaggio Liberty 125 (ZAPM11000), Piaggio Sfera 125 (ZAPM01000)

Starter freewheel as a safety component in the starting system

The starter freewheel forms the connection between the starter motor and the crankshaft. The freewheel secures the components when the engine starts to run and the engine speed exceeds the starter motor speed.

Creaking and cracking noises during the starting process often indicate a defect in this component. Inaction here can lead to a complete defect in the engine housing.