Great Plains 3PYP Operator Manual - Manual (Page 24)

20 3PYP Table of Contents Index Great Plains Manufacturing, Inc.
401-312M Table of Contents Index 2014-09-09
Marker Extension
Marker extension needs to be adjusted once for the initial
3PYP setup, and later only if changing row spacing
(including locking up row units for single-row operation
on a twin-capable planter).
1. If changing between single- and twin-row operation
on older planters, be sure the Row Mode Spacer
blocks are first set correctly before adjusting
markers. See page 158.
2. Move the planter to a location where both markers
may be safely unfolded. Unfold the planter. Lower
the planter. Tilt up and unfold one marker.
3. Find the suggested initial marker Extension in the
following tables.
Refer to Figure 14 and Figure 15
4. Measure out the Extension distance from each
outside end row unit (or row unit in use for twin-row
in lock-up). Do not measure to center of row pair.
5. Mark the ground at this point.
6. To adjust marker width, loosen nuts on U-bolts .
Move marker disk tube in or out to get the proper
adjustment. Tighten nuts .
7. Repeat steps 4 and 6 for the other side.
8. With the planter still lowered, drive forward a few feet
for each side.
9. Check the mark locations. Adjust to obtain the table
value.
Row Spacing Marker Extension Row Spacing Marker Extension
15 in. (38.1 cm) Single 240 in. (609.6 cm) 36 in. (91.4 cm) Twin-Row 230 in. (584.2 cm)
20 in. (50.8 cm) Single 240 in. (609.6 cm) 38 in. (96.5 cm) Single 247 in. (627.4 cm)
30 in. (76.2 cm) Single 255 in. (647.7 cm) 38 in. (96.5 cm) Twin-Row 243 in. (617.2 cm)
30 in. (76.2 cm) Twin-Row 251 in. (637.5 cm) 40 in. (101.6 cm) Single 260 in. (660.4 cm)
36 in. (91.4 cm) Single 234 in. (594.4 cm) 40 in. (101.6 cm) Twin-Row 256 in. (650.2 cm)
Figure 14
Marker Extension
25265
E
E
E E
Figure 15
Marker Extension Adjustment
18878
1
2
3
E
1 2
3
1