Great Plains 2525P Assembly Instructions - Manual (Page 17)

Test Marker Function Front Page Appendix Great Plains Manufacturing, Inc. 17
2013-09-05 Front Page Appendix 113-786M
Set Marker Extension
Refer to Figure 23
Marker extension dimensions vary with row spacing,
and row patterns (rows in use). Charts or tables are
provided in your Operator manual.
Marker extension is typically measured from the
centerline of the outside row (not the centerline of a twin-
row pair) to the mark left in the ground when the marker
is lowered.
If you modify your row spacing by shutting off rows, this
can also change the marker extension required. Some
changes can result in an asymmetric row spacing about
machine centerline. This usually causes the marker
extension to be different for left and right sides,
depending on the direction of planting for each
successive pass.
Making short practice passes confirms correct marker
extension.
Marker Extension Adjustment
Refer to Figure 24
To adjust a marker width or disk pivot orientation:
1. Lower markers to field position and extend the
marker side to be adjusted.
2. If disk angle or direction is to be changed, make that
change before adjusting extension.
3. Pull forward to fully settle markers and leave a mark
to check.
4. On telescoping outer marker tubes, loosen both jam
nuts
and both
1 ⁄
2
inch set screws .
5. Move marker disk tube in or out to get the desired
mark placement.
6. To change throw direction of marker, remove inner
tube completely, and reinsert at desired orientation.
7. Tighten both
1 ⁄
2
inch set screws and then both jam
nuts.
8. Pull forward to check actual results and fold marker.
E
Figure 23
Marker Extension
E
Figure 24
Marker Extension Adjustment
19204
1
2
1 2