horsch Pronto 3 - 6 DC, Operating Instructions Manual

Page: 84 / 129

Setting
Aggressiveness
Heavy duty harrow - hole pattern for adjustment
¾
Lift the machine.
¾
Adjust the aggressiveness of the heavy duty
harrow to the soil conditions via the hole
pattern.
¾
Make the same setting on each hole pattern.
¾
Check the working results in the field and
correct the setting, if required.
Working depth
A
B
Heavy-duty harrow working depth adjustment
A Eccentric disc
B Bolt with cotter pin
¾
Pull out the cotter pin and remove the bolt (B).
¾
Lift the machine, adjust the aggressiveness
of the harrow to very strong and lower the
machine again. The harrow is resting on the
ground. This relieves the eccentric disc (A).
¾
Adjust the working depth by turning the ec-
centric disc (A). Use an open-end spanner
(spanner width 24 mm) for turning. Make the
same setting on all eccentric discs.
¾
Insert the bolt (B) again and secure it with the
cotter pin.
Preload of the arms
The preload of the arms can be adjusted in three
levels via a spring.
C
D
Arm of the heavy-duty harrow
¾
Loosen the screw (D) and operate the lever
to relieve the spring.
¾
Hook the spring into one of the three holes (C).
¾
Tension the spring again with the lever and
fasten the screw (D) again.
¾
Perform the same setting on all points.
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