horsch Avatar 12.20 SW, Operating Instructions Manual

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Angle of attack
In the basic setting (minimum angle of attack)
the marks on the side plate and bearing journal
contact each others as shown:
1
2
The angle of attack can be adapted to the con-
ditions of use. It can be changed by turning the
bearing journal.
¾
Loosen the screw (1).
Please note: The screws of the coulter on the
right machine side have left-handed thread
and are marked. The screws of the coulter
on the left machine side have right-handed
thread.
¾
Adjust the angle with the two-flats key (2) and
tighten the screw.
¾
Preferably set a larger angle of attack for
heavy soil.
Depth guidance wheels
The depth guidance wheels shall rest against
the coulter discs while they can still be turned
easily by hand.
The distance of the coulter disc can be adjusted
by adding or removing shims.
¾
Disassemble the depth guidance wheel and
add or remove shims (1).
¾
Attach the depth guidance wheel, tighten the
screws.
1
(a) Shims
Rubber mounting
¾
Keep the rubber mounting free of oil. Oils
and grease can harm the rubber and thus
adversely affect the function.
Replacing coulter discs
The coulter discs must be replaced when worn.
¾
Unscrew the depth guide wheel.
¾
Loosen the screws on the adjustment lever
(1):
1
¾
Remove the swivel arm (2):
2
36