Great Plains 3N-3020 Operator Manual - Manual (Page 45)

3/29/2012 196-366M
43 Adjustments
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).
17635
Seed-Lok Lock Up
Optional Seed-Lok firming wheels provide addi-
tional 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 han-
dle (1). Seed-lok is spring loaded so it will snap
back into place.
18282
Locked
position.
Figure 33
Marker disk
Figure 34
Seed-Lok adjustment