The so-called starter clutch Bendix for LUCKY STAR 250 / 300 Helpful information:
External diameter: 88 mm
Thickness: 13 mm
Diameter for cooperation with the sprocket: 42 mm
Distance between holes: 64 mm
Fixed with three screws: M8
ATTENTION! !! There were two types of starter clutches in LUCKY STAR, they differed in the diameter of the mating raceway: 39mm or 42mm.