69
Marchesan Implementos e Máquinas Agrícolas “TATU” S.A.
PST DUO FLEX / PST DUO FLEX SUPREMA
To adjust the row marker, it is important to keep the same measure on the front and
rear gauges (“A”) and define the spacing between row units (“B”).
To adjust the marker discs, loosen up the nuts and displace the extensor to the desired
position. This distance must be obtained as follows:
• Activate the hydraulic system and lower the equipment to leave it in working position,
and then do the same procedure with the row marker.
• To obtain the “C” measure drive the equipment over a few meters and measure the
distance between the center of the tractor trace and the center of the first seed row unit.
• Loosen up the fixation bolts on the marker rod and then displace it to the “C” position.
Tighten up the bolts again.
• Adjust the marker disc action in a way that it leaves a visible mark on the soil. The
marks left by the marker discs must be a reference to pass the tractor tire.
• Activate the tractor hydraulic control valve to lift or lower the equipment. Check if the
row markers are properly working.
• Use the formula below to find the marker distance.
Example:
A - Front gauge of the tractor = 1420 mm
B - Spacing between row units = 450 mm
L - Number of row units
C - Marker distance that needs to be found out (millimeters).
Considering an equipment with 9 row units, spacing of 450 mm and tractor gauge of
1420 mm, determine the row marker distance.
C = B x (L+1) - A
450 x (9+1) - 1420
3080
1540 mm
2
2
2
Adjustments and operations
Row markers
• For this practical adjustment, it is necessary to keep the front and rear gauges
with the same measure and to keep the center-to-center measure of the front
tires equal as the rear ones.
• Follow the instructions that can be found on the next page.
NOTE
