Pic. 72. Throttle positions: a - partial opening of the throttle valve of the first chamber; 6 - full opening of the throttle valves; 1 - throttle lever of the second chamber; 2 - throttle lever of the first chamber; 3 - throttle valve of the first chamber; 4 - throttle actuator lever of the second chamber; 5 - screw for factory adjustment of the completeness of closing the throttle valve of the second chamber; 6 - throttle valve of the second chamber.
The full opening of the throttle valves is checked by turning the levers of their drive to the position against the stop. The value of the maximum opening of the throttle valve of the first chamber (13±0,1) mm is achieved by adjusting the carburetor control drive. The value of the maximum opening of the throttle valve of the second chamber must be (17±0,1) mm and is provided by the damper drive design.