in-line pump with RSF flyweight governor function of the RSF governor (idle final speed) displacement of the piston rod torsion of all pump plungers by turning the camshaft one can see the stroke of all pump plungers function of the pressure valves description ordernumber 1138 see also: constant vacuum carburetor Mercedes-Benz cylinder head M 270 with camtronic Piezo-injector cylinder block with wet liners