Great Plains 2525A Operator Manual - Manual (Page 104)

100 2025A/2525A Table of Contents Index Great Plains Manufacturing, Inc.
118-999M Table of Contents Index 2013-06-04
Marker Extension
If markers were ordered as a separate accessory, or not
dealer-installed, mount them per the installation instruc-
tions supplied with the markers.
Refer to Figure 90
Check the marker extension . The installation instruc-
tions may not cover setting the correct marker length, or
may specify a length not optimal for your row configura-
tion.
3-Point drills have their row units spaced equally about
machine centerline. Set the initial marker extension to
the values specified in the diagrams on the following
pages, measured from the centerline of the outside row
(not the centerline of a pair) to the mark left in the ground
when the drill 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, depend-
ing on the direction of planting for each successive pass.
Making short practice passes confirms correct marker
extension.
Marker Extension Adjustment
Refer to Figure 91
To adjust a marker width or disk pivot orientation:
1. Lower drill 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 drill and leave a mark to
check.
4. On telescoping outer marker tubes, loosen both jam
nuts
and both
1 ⁄
2
in set screws .
5. Move marker disk tube in or out to get the desired
mark placement. See diagrams starting on page 101
suggested initial marker extensions, measured from
outside row to mark.
6. To change throw direction of marker, remove inner
tube completely, and reinsert at desired orientation.
7. Tighten both
1 ⁄
2
in set screws and then both jam nuts.
8. Pull forward to check actual results and fold marker.
E
Figure 90
Marker Extension
E
Figure 91
Marker Extension Adjustment
19204
1
2
1 2