Great Plains LC40 Operator Manual - Manual (Page 37)

Great Plains Manufacturing, Inc. Table of Contents Index Adjustments 33
2014-07-21 Table of Contents Index 591-049M
Furrower Disc Adjustments
Adjustments are provided for disc height, spread, angle
and cant.
Sharp Object Hazard:
Be cautious when working near the lister. The edges of the
furrower discs may be sharp.
Refer to Figure 27 and Figure 28
Furrower Disc Angle
This setting needs to be adjusted for your furrow profile
and conditions. The other furrower adjustments are often
satisfactory at their factory settings.
Loosen the nuts at the slot bolts and the pivot bolts ,
top and bottom (8 fasteners total).
Set the disc angle as desired. Re-tighten nuts.
Furrower Disc Height
The factory default setting is notches
up, anchor
weldment-low (mounting bolts in upper holes of anchor
weldment
), and channels /disc-mounts centered
on each other.
If it is necessary to change the furrower height, first see if
the channel/mount adjustment suffices. Loosen both
nuts
on one disc side. Slide the mount up or down
on the channel . Re-tighten.
To adjust up to
1 ⁄
2
inch (2.5 cm) lower, dismount the
anchor weldment and invert it (notches down).
If it is necessary to move the anchor weldment, it may
also be necessary to disturb the angle adjustments to
gain access to the mounting nuts
and bolts.
Furrower Disc Spread and Cant
In addition to height, loosing the nuts
for the
channels /disc-mount connection also provides
adjustment for spread (distance between discs) and cant
(vertical disc angle). Be sure to note and restore the
height set at this interface.
Figure 27
Furrower Height
34881
4
7
5
5
2
1 2
Figure 28
Furrower Adjustments
34882
7
5
4
5
1
2
3
3
4 5 5
7 5
5
4 3
7
7
5 5