GREAT PLAINS 3N-3010, Operator'S Manual, Page: 49 / 118

196-366m Table of Contents Index Adjustments
Great Plains | | 4/22/19 Table of Contents Index 45
Leveling Marker Disk
If the marker disk is not square with the ground when the
marker is lowered in the field, or if the marker arm tends
to fold up while lowered in the field, adjust the marker
mount.
Refer to Figure 33
To adjust, loosen 1/2-inch bolts (1) and rotate marker
mount (2) until marker disk is square with the ground (3).
Seed-Lok Lock Up
Optional Seed-Lok firming wheels provide additional
seed-to-soil contact. The wheels are spring loaded and
do not require adjusting. In some wet and sticky
conditions the wheels may accumulate soil.
Refer to Figure 34
 NOTE: Side gauge wheel is removed for clarity.
To lock up Seed-Lok wheels, raise drill. Rotate lock-up
handle (1) 90 degrees down on top of opener body. Push
up on Seed-Lok wheel (2) until wheel arm latches up.
Opener disk blades may be sharp. Use caution when making
adjustments in this area.
To unlock Seed-Lok wheels, pull up lock-up handle (1).
Seed-lok is spring loaded so it will snap back into place.
19101
17635
Figure 33
Marker Disk Adjustment
19101
18282
Figure 34
Seed-Lok Adjustment