Great Plains 2020P Operator Manual - Manual (Page 45)

4/23/2010 118-740M
43 Adjustments
Marker Width
Refer to Figure 51
To adjust marker width, loosen jam nuts (1) and
1/2-inch set screws (2). Move marker disk tube (3)
in or out to get the proper dimension.
The diagram below shows marker width for 7 1/2-
inch, 10-inch and 15-inch opener spacing with all
meters open.
To measure for marker width adjustment:
1. Lower drill in the field and drive forward a few
feet.
2. Measure from the middle of the outside row to
the mark in the ground made by the marker
disk.
NOTE: If planting wider row spacing by shut-
ting off meters, markers may need to be read-
justed. Refer to page 43 for more information.
Figure 51
Marker Width
18304
Marker Width
18329