Features of the device
Two-chamber with falling flow, with sequential opening of throttle valves. The carburetor has an accelerator pump, a power mode economizer, an automatic starting device with an electric thermal switch and an electromagnetic shut-off valve (Fig. 2.90).
Fig. 2.90. Weber carburetor parts.
1 — bimetallic spring housing; 2 — pneumatic drive of the air damper: 3 — carburetor cover; 4 - fuel filter; 5 - fuel pump sprayer; 6 - electromagnetic shut-off valve; 7 - quality screw; 8 - accelerator pump; 9 — power mode economizer; 10 - throttle valves; 11 — throttle valve axis: 12 — fast idle speed adjustment screw; 13 — fuel drain hose into tank; 14 - needle valve; 15 — needle valve seat; 16 — gasket; 17 — idle fuel jet; 18 - emulsion tube, air and fuel jets of the main metering system; 19 - quantity screw; 20 - float.
Removal and installation
Disconnect the negative cable from the battery and remove the air filter. Disconnect the wires from the automatic starting device and the electromagnetic shut-off valve. Disconnect the vacuum supply hose to the vacuum advance regulator and the throttle actuator rod. Disconnect the fuel supply and drain hoses. Cut the clamps on these hoses and replace them with clamps with a screw or a screw and nut. Unscrew the two fastening nuts, remove the washers and the carburetor. Clean the mating surfaces and install the carburetor with a new gasket. Connect the hose to the vacuum advance regulator and the fuel supply and drain hoses. Connect the throttle actuator rod. Connect the wires to the automatic starting device and the electromagnetic shut-off valve. Install the air filter and connect the battery. Check the idle speed and the CO content in the exhaust gases.