
66
3S-4000HD/HDF
Great Plains Manufacturing, Inc.
195-067M
2019-03-14
Marker Adjustments
Overhead Crushing and Sharp Object Hazards:
Never allow anyone near the drill when folding or unfolding
the markers. You may be injured if hit by a folding or unfolding
marker. Marker disks may be sharp. Markers may fall quickly
and unexpectedly if the hydraulics fail.
There are four operating adjustments for markers:
• Marker Extension
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
planting speed.
• Chain Length
You may want to adjust the chain length to ensure the
markers track uneven ground, and do not drag
excessively 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 Extension
Marker extension depends on drill size, row unit spacing
and row units in use.
See “
” on page 24 for initial values for
marker extension.
To adjust marker width, loosen two U-bolt nuts
and
slide arm tube
in or out.
Figure 75
Marker Extension Adjustment
18878
1
2