Abstract: A starter head for the starter of an internal combustion engine includes a motor shaft, on which a starter pinion is mounted for axial sliding movement. A free wheel and a driving sleeve are secured on the starter pinion by means of a securing shroud. The starter pinion has a bore over the whole of its length, with the motor shaft being displaceable within this bore. The starter has a device for limiting the axial throw of the starter head. The throw limiting device comprises a stop ring cooperating with a further ring fixed on the free end of the engine shaft within the bore of the pinion. The stop ring is fitted in a semicylindrical groove formed in the bore.