Some items from this specific schematic: Spark Plug W20fr-, Gasket,cylinder (nas), Bolt,flange,6x95, Gasket,cylinder H (nas).
twelve components are shown in this Sfx50s 1999 (x) Belgium Cylinder/cylinder Head exploded diagram.
The component with the lowest price in the CYLINDER/CYLINDER HEAD schematic is the Bolt,stud 6x28.