The Starter Clutch is made up of components including this Pinion Gear Assembly,starter which is the most expensive.
Parts such as the Starter Clutch: Pin, Washer (27x48x1), Shim, Bolt are included in the Gr650 1984 (e) (e01 E04 E15 E16 E17 E21 E22 E24 E26 E34 E39) Starter Clutch parts fiche.