Cross-section of the Solex Zenith 35/40 INAT carburetor:
6 — starting device air jet; 9 - main fuel jet; 11 — starting device supply tube; 12 — fuel jet of the starting device; 13 - main air jet of the 1st chamber; 14 - main air jet of the 2nd chamber; 15 — main idle system air jet; 16 — main idle system fuel jet; 17 — mixture quality corrector tube; 18 — auxiliary idle system air jet; 19 — fuel jet of the auxiliary idle system; 20 - electromagnetic shut-off valve; 21 — idle mixture quantity adjusting screw; 22 — adjusting screw for idle mixture quality (composition); 23 - thermostat valve.