With a quantity of four pieces, the Stud, 10x153 is the most used part in the CRANKCASE ('80 KZY 50-E1) diagram.
The 190197 Crankcase ('80 Kzy 50-e1) consists of twenty-one pieces with the Set-crankcase being the most expensive.
Some items from this specific schematic: Screw-cntsnk Hd,6x20, Set-crankcase, Nozzle, Stud, 10x153.