Carburetor parts: 1 - lid; 2 - cover gasket; 3 - body; 4 - throttle body; 5 - spacer; 6 - viewing window of the float chamber with a fuel level indicator; 7 - float; 8 - needle valve; 9 - main fuel jet; 10 - economizer valve; 11 - idle fuel jet; 12 - electromagnetic shut-off valve; 13 - adjusting screw for idle mixture quality (composition); 14 - idle mixture quantity adjusting screw; 15 - accelerator pump; 16 - accelerator pump nozzle; 17 - pneumatic drive of the air damper; 18 - pneumatic drive of the throttle valve of the 1st chamber; 19 - pneumatic drive of the throttle valve of the 2nd chamber; 20 - throttle actuator lever.
(The article is copied from the website mazbook)