The most reasonably priced component used on the Cn250 Helix 1994 (r) Switzerland Kph Cylinder is the Bolt,flange,sh,6x16.
With two applications this Clip B,hose. is the most specified part.
Some items from this specific schematic: Bolt,flange,sh,6x16, Cylinder Comp., Spring,cam Chain, Gasket,cam Chain (nas).