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ENGLISH
3.15 ROW MARKER
The row marker is a machine that traces a reference line parallel
to the tracks of the tractor on the ground.
Once the tractor has completed its run and it has turned around,
follow the reference row with one of the front wheels (Fig. 41) or
with the centre of the tractor (Fig. 42) according to the row marker
employed. . Each time it passes, the seeder will mark a reference
line on the side opposite to the previous passage.
Row marker arm inversion is activated by the tractor's hydraulic
distributor control.
When the system is not in use, protect the quick coupling with its
cap.
ROW MARKER DISC ADJUSTMENT
Attach the disc holding sleeve (1, Fig. 43) onto the two arms of
the row marker, without over-tightening the nuts, insert the disc
and secure it in place by means of the snap pin.
Row marker with trace on the tractor wheel (Fig. 41)
L= D (N +1) - C
where:
L= the distance between the outer most unit and the row marker;
D= the distance between the rows;
N= the number of units operating;
C= the tractorís front wheelbase;
Example: D = 75 cm; N = 10 units; C = 190 cm.
L = 75 (10 + 1) - 190 = 317,5 cm
Row marker with trace in the centre of the tractor (Fig. 42)
L= D (N +1)
where:
L= the distance between the outer most unit and the row marker
D= the distance between the rows
N= the number of units operating
Example: D = 75 cm; N = 10 units.
L = 75 (10 + 1) = 412,5 cm
For normal soils the correct working position of the disc is that
shown in Fig. 44 ref. A; for strong soils turn it over as shown in
ref. B Fig. 44.
The row marker disk may be equipped with a depth limiter (C,
Fig. 44), which is particularly useful for light soils, reducing
the risk of damage to the row marker itself.
68 - EN
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2
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USE AND MAINTENANCE
fi g. 41
fi g. 42
fi g. 43
Avanzamento
Advancement
Avancement
fi g. 44
C
D
L
D
D
D
L
D
D
1
nr 17
A
B
cod. G19502812
D
D
C
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