Carburetor: Description and Operation

Fig. 1 Mikuni carburetor:

The Mikuni carburetor, Fig. 1, is a conventional downdraft two barrel compound type carburetor. The automatic choke on these units is of the thermo-wax type which is controlled by engine coolant temperature. The main body on these units consists of a black resin compound. Other features of these units include a diaphragm type accelerator pump, bowl vent, fuel cut-off solenoid, air switching valve, sub EGR valve, coasting air valve and a jet air control valve. California units also incorporate a high altitude compensation system.