Engine B3, B5
1 - thrust; 2 - electric heating and bimetallic spring automatic cold start; 3 - mount; 4 - thrust; 5 - vacuum device with fastening; 6 - the upper part of the carburetor; 7 - float; 8 - needle valve float; 9 - vacuum piston; 10 - electromagnetic ventilation valve; 11 - pump nozzle and check valve; 12 - bolts; 13 - primary transition jet; 14 - accelerating pump; 15 - fuel cut-off valve; 16 - secondary membrane; 17 - idle switch; 18 - throttle adjusting screw; 19 - bolt; 20 - main jet; 21 - cap; 22 - screw for adjusting the composition of the mixture; 23 - flange; 24 - fast idle adjusting diaphragm and mount