When tightening nut 1, the damper opens, and when tightening nut 2, the damper closes.
1. Press the accelerator pedal all the way down. The first chamber throttle valve should open completely. This can be determined by the position of the throttle control sector, which should move to the extreme position.
2. Release the accelerator pedal, and the throttle valve of the first chamber should be completely closed. The throttle control sector should move to the stop in the opposite direction. If this does not happen, adjust the drive.
(Information copied from the portal: VAZBOOK.RU)
3. To adjust, loosen one of the adjusting nuts. Tighten the other nut until the throttle valve opens and closes completely. Then tighten the nut that was loosened (see note).