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6.2.4.2 NS PLUS MODEL (STRAIGHT COULTERS)
This model is fitted with two types of coulter:
FIXED COULTERS
These coulters are not
height-adjustable. Conse-
quently, the sowing depth will
be defined by the adjusters on
the coulter unit's chassis (see
section 6.2.1 DEPTH ADJUST-
ERS).
It is only possible to change
the coulter pressure by adjust-
ing the nut at the bottom of
the spring (1, Fig. 6.17).
FIXED
3
1
Fig. 6.17
2
The pressure can also be adjusted by changing the bolt's po-
sition (2, Fig. 6.17).
The coulter is fastened to the bracket by a special SOLÀ bolt
(3, Fig. 6.17) with a self-locking nut. The coulter's side clear-
ance is adjusted using this nut.
HEIGHT-ADJUSTABLE COULTERS
These coulters are aligned with the wheels of the tractor and
seed drill.
IMPORTANT:
IT IS ADVISABLE TO ADJUST
THESE COULTERS IF THE RUTS ARE VERY DEEP.
Adjust the spring nut to
set the pressure exerted
by the coulter on the soil
(1, Fig. 6.18). The pressure
can also be adjusted by
changing the bolt's posi-
tion (2, Fig. 6.18).
These coulters are fas-
tened to the bracket by a
special SOLÀ bolt (3, Fig.
6.18) with a self-locking
nut. This nut is used to set
the coulter's clearance.
ADJUSTABLE
3
1
4
Fig. 6.18
2
These coulters' depth can be adjusted individually, enabling
the coulters to be lowered to adjust their height, as follows:
1-
Adjust the nut and bolt (4, Fig. 6.18).
2-
Place the coulter in the desired position.
6.2.4.3 NS PLUS MODEL (SUFFOLK COULTERS)
These coulters are not height-adjustable. Consequently, the
sowing depth will be defined by the adjusters on the coulter
unit's chassis (see section 6.2.1 DEPTH ADJUSTERS).
The pressure on the soil can be adjusted using three spin-
dles, one for each folding part and another for the centre of
the machine.
Turn the spindle clockwise to increase pressure, anticlock-
wise to decrease it.
Fig. 6.19
Fig. 6.19
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