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Great Plains Manufacturing, Inc.
Adjustments
59
2019-03-12
195-068M
Marker Adjustments
Pinch, Crush and Sharp Object Hazards:
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:
• “
• “
• “
Marker Width
Marker extension depends on drill size, row unit spacing
and row units in use.
See “
” on page 106 for initial values for
marker extension.
To adjust marker width, loosen two jam nuts and then
their bolts and slide arm tube in or out. Re-tighten
bolts, then the jam nuts.
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Figure 61
Marker Extension Adjustment
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