Belarus 820 - 2.20 Seat and its adjustments

80-0000010B OM
64
2.20 Seat and its adjustments
2.20.1 General information
The seat has a mechanical suspension, consisting of two spiral torsion springs and
a gas charged shock absorber of bidirectional operation. A “scissors”-type guiding mecha-
nism ensures a strictly vertical movement of the seat. A dynamic seat stroke is 100 mm.
ATTENTION: BEFORE STARTING TO OPERATE THE TRACTOR ADJUST
THE SEAT TO REACH THE MOST COMFORTABLE POSITION. CARRY OUT ALL AD-
JUSTMENTS WHEN STAYING IN THE SEAT! THE SEAT IS CONSIDERED CORRECT-
LY ADJUSTED ACCORDING TO THE MASS IF IT MOVES HALF OF THE STROKE UN-
DER THE OPERATOR'S WEIGHT (THE SUSPENSION STROKE IS 100 MM)!
2.20.2 Adjustments of seat “BELARUS”
а) Seat “BELARUS 80-6800010” b) Seat “BELARUS 80В-6800000”
1 – handle to adjust according to the weight; 2 – handle for longitudinal adjustment;
3 – handwheel to adjust the backrest tilt; 4 – handle to adjust backrest.
Figure 2.20.1 – Adjustments of the seat “BELARUS”
The seat “BELARUS” has the following adjustments:
- adjustment according to the operator's weight. It is carried out by means of handle
1 (figure 2.20.1) within the range from 50 to 120 kg. To adjust the seat for a bigger weight
it is required to shift the pawl of handle 1 into position “A” and tighten the springs with a
reciprocal movement. To adjust the seat for a smaller weight it is required to shift the pawl
into position “B” and release the springs with a reciprocal movement.
- longitudinal adjustment. It is carried out by means of handle 2 within the range of
 80 mm from the middle position. To move the seat forward-backward it is required to pull
handle 2 up, move the seat and then release the handle. The seat will automatically get
locked in the required position.
- adjustment of the backrest tilt angle:
a) For the seat “BELARUS 80-6800010” the backrest tilt angle is adjusted by means
of handwheel 3 within the range from minus 15° to plus 20°. To increase the backrest tilt angle
it is necessary to turn the handwheel clockwise, to decrease it – counterclockwise.
b) For the seat “BELARUS 80B-6800000” the backrest tilt angle is adjusted by means
of handle 4 within the range from plus 5° to plus 25°. To change backrest tilt angle it is required
to pull handle 4 up to the stop, move the backrest to the necessary direction to achieve the re-
quired angle and then release the handle. The backrest will get locked in a required position.