downdraft carburetor parts cut in this model: mixing chamber, float chamber, float-needle valve, idle speed channel, accelerator pump, pull- down and automatic choke. all parts can be easily moved description ordernumber 1006 see also: Common-rail high pressure pump with fuel-delivery regulation valve nozzle holder with two-spring injection nozzle and needle-displacement sensor Air-flow sensor VP 44 (Bosch) radial-piston distributor-type injection pump