The Screw, Flat Head is the most widely applied product in the CH50 1989 3EC4 FRANCE 293EC-351FA DEMARREUR KICK ( three times ).
Some items from this specific schematic: Kick Crank Assy, Kick Shaft Assy, O-ring (35r), Idler Gear Assy.
The Yamaha DEMARREUR KICK has twenty-four products enlisted in the schematic.