Great Plains 2S-2600HDF Operator Manual v2 - Manual (Page 74)

70 2S-2600HD Table of Contents Index Great Plains Manufacturing, Inc.
195-069M Table of Contents Index 2014-02-03
Marker Adjustments
Crushing Hazard:
You may be injured if hit by a folding or unfolding marker.
Markers may fall quickly and unexpectedly if the hydraulics
fail. Never allow anyone near the drill when folding or unfold-
ing the markers.
There are four operating adjustments for markers:
• Marker Width
Once set for a specific row spacing, this only needs
periodic checking to ensure the clamp is secure.
• Disk Angle
Even if your row spacing rarely changes, you may
need to adjust disk angle for soil conditions and plant-
ing speed.
• Chain Length
You may want to adjust the chain length to ensure the
markers track uneven ground, and do not drag exces-
sively when markers are folded.
• Marker Speed
Once initially set by your dealer, this rarely needs
modification.
There are also three maintenance items for markers:
• “Bleeding Marker Hydraulics” on page 83
• “Marker Shear Bolt” on page 88
• “Marker Disk” on page 88
Marker Extension
Marker extension depends on drill size, row unit spacing
and row units in use.
See “Marker Setup” on page 21 for initial values for
marker extension.
Refer to Figure 72
To adjust marker extension, loosen two jam nuts and
then their bolts
and slide arm tube in or out.
Re-tighten bolts, then the jam nuts.
Figure 72
Marker Extension Adjustment
26497
1
2
1 2