The starting circuit is activated when the ignition key is turned to the starting position. At this stage, current passes through the solenoid coil, and the resulting magnetic field moves the solenoid plunger. As it moves, the plunger moves the lever, which in turn engages the starter gear with the flywheel ring gear. At the end of its stroke, the plunger connects internal electrical contacts, after which all the current from the battery begins to flow to the starter motor, causing it to rotate.
Once the engine starts, a one-way clutch on the starter armature shaft allows the pinion to rotate freely on the shaft, driven by the flywheel. This eliminates the risk of damage to the starter, which would occur if the starter were driven by the engine. Once the ignition key is released from the start position, power is removed from the solenoid coil and the spring returns the solenoid plunger to its original position. At the same time, the lever will move the starter pinion away from the flywheel ring gear. When the solenoid plunger is pulled away from the electrical contacts by the spring, they open and the starter motor stops receiving power.
You can find the original on the resource (www.peugeotbook.ru)