You will need: a 13 mm wrench, wire with a diameter of 2.0–2.1 mm.
1. Place the vehicle on an inspection pit and press the rear of the vehicle several times with a force of approximately 400–500 N (40–50 kgf) to set the rear suspension to the middle position.
2. Loosen the front bolt securing the regulator to the bracket.
3. Using a wire as a feeler gauge, adjust the bracket so that the gap between the drive lever and the lever spring is 2.0–2.1 mm.
4. To do this, move the drive lever by the protrusion. In this position, tighten the bolt.
Material was taken from the website (LADAMAN)
5. If the pressure regulator is adjusted correctly, when braking from a speed of about 40 km/h on a horizontal section of the road with a hard surface, the front wheels should lock slightly earlier than the rear ones (this can be determined by an observer outside the vehicle). Otherwise, increase the gap (if the rear wheels lock up before the front ones) or reduce (if the rear wheels lock up much later than the front ones). After this, check the braking adjustment again and repeat it if necessary.