Great Plains YP625PD Operator Manual - Manual (Page 48)

44 YP625PD Table of Contents Index Great Plains Manufacturing, Inc.
401-754M Table of Contents Index 02/23/2011
Coulter Depth
Refer to Figure 36
Set coulter depth prior to first planting. Suggested
depth
is 6 mm deeper than coulter depth. See
page 51 for planting depth.
Suggested shank length is:
23 cm
for a normal field tool bar height of:
66 cm,
and a typical planting depth of:
10 cm.
When crops or field conditions change, review the
coulter depth and adjust it as needed.
Coulter blades wear. Inspect blades regularly. Lower the
coulters to compensate for wear. If a shank cannot be
further adjusted to compensate for wear, replace blade.
New blade disks have a nominal diameter of:
51.6 cm.
When the diameter of a blade disk is worn to:
37 cm,
replace the blade.
To adjust coulter depth:
• Mark the coulter shanks for the new depth desired.
• Raise the planter and install transport locks (page 19).
• Loosen jam nuts and set screws at the tool bar.
• Slide the shank up or down as needed. Tighten nuts.
Coulter Blade Angle
Refer to Figure 37
For fields where frequent sharp turns are unavoidable,
you can reduce coulter plowing by allowing the coulters
to caster at the pivot casting. Loosen the jam nuts at
.
Loosen the set screws just enough to allow the casting
to swivel. Re-tighten the jam nuts. Do not remove the
center stop screw
.
Coulter to Row Alignment
The factory configuration sets coulters to run in “zone”
mode, in between the outside and center openers of
each triple. To adjust for other alignments, loosen the
mounting bolts
, and re-position the coulter mount.
Coulter Blade Style
Coulter blades are available in two styles:
• fluted, with radial waves, and;
• turbo, with waves tangent to the hub.
To change blade styles, order replacement blades. See
“51 cm (20in) Coulter Blades” on page 93.
Figure 36
Coulter Depth
31919
1
6
8
7
1
9
8
6
7
8
1
Figure 37
Coulter Blade Angle / Alignment
31874
2
2
3
1
4 1
2
3
4