thirty-seven components are shown in this Kaf620-a1 Mule2510 1995 Europe Optional Parts(generator&meter) exploded diagram.
A sample from the products for the Optional Parts(generator&meter) include: Holder, Tachometer, Gear-meter Screw, Cover,generator, Oil Seal,tachometer.
In this schematic the "Bolt-flanged,8x20" is used most often.