Idle system and transition systems

When the engine is idling, the throttle valve of the 1st chamber 6 is closed. The idle system takes fuel from the emulsion well after the main fuel jet 3 and is supplied to the idle fuel jet 12. At the outlet of this jet, the fuel mixes with air passing through the air jet 13. The emulsion exits under the throttle valve through the hole of the quality adjusting screw 15 (composition) idle mixture, while the amount is determined by the opening of the throttle valve 6 of the 1st chamber.

When the throttle is opened, the emulsion also enters through the slot of the transition system of the 1st chamber 16, which ensures a smooth transition from idling to load modes of the engine. The 2nd chamber has only a transitional system.