Sectional view of Solex Zenith 35/40 INAT carburetor with auxiliary starting device:
21 — auxiliary starting device fuel jet; 22 — auxiliary starting device air flask; 23 — piston; 24 - adjusting screw; 25 - temperature sensitive element; 26 - air valve; 27 — mixture quality (composition) adjustment screw; 28 - washer; 29 - threaded plug.
[The original article is located on «BMWman»]