On the starter there are rings or also called bushings, this one has its importance. One is found on the collector side of the armature at the rear bearing, there is also a bearing on the support or front side either on the starter nose, there is also sometimes a ring on the intermediate bearing of the starter.

On older models such as Ducellier or Paris-Rhone, we often think about changing the brushes or starter brushes, but it is important to check the wear of these rings and possibly replace them.