Great Plains 2000 Operator Manual - Manual (Page 28)

25
Section 3 Adjustments
2012-03-27 12, 15 and 20 Foot Series Three-Point Drills 118-389M-A
Great Plains Mfg., Inc.
Seed-Lok
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.
To lock up firming wheels on 00 and 10 series openers,
hook one end of chain in the opener-body hole just above
the wheel arm (1). Pull firming-wheel arm (2) up as high as
possible and wrap chain around arm. Hook other end of
chain in a link. Leave no slack in chain; secure wheel arm
in its highest position.
Figure 3-7
Seed-Lok Lock Up, 00 and 10 Series Openers
To lock up firming wheels on 20 series openers, remove
lock-up handle (1) from its keeper under drill walkboard.
Insert handle through hole in opener body as shown in
Figure 3-8. Hook handle around firming wheel (2). Pull up
on wheel until arm is secured by self-loading lock-up
spring (3).
To unlock firming wheels on 20 series openers, use lock-
up handle to lift firming wheel. With your free hand, reach
into opener body and unlatch spring from wheel arm.
Figure 3-8
Seed-Lok Lock Up, 20 Series Opener
NOTE: Openers in Figure 3-7 and Figure 3-8 are disas-
sembled for illustrative purposes only.
1
2
16856
17285
1
3
2
Harrow Adjustment
Figure 3-9 shows one harrow setting that has been suc-
cessful in no- and minimum-till conditions. Because of dif-
ferent soil moisture, trash levels and trash types, you may
need to reposition the tube frame or tines.
Figure 3-9
Spring Tine Angles
To adjust the frame tube, refer to Figure 3-10. Loosen four
hex nuts (1) on the u-bolts and rotate the frame tube (2).
To adjust the tines, loosen four 1/2-inch hex nuts (3) on the
1/2-inch u-bolts (4) on the support bar (5). Rotate tine
tubes (6) so the tines (7) are against the stop bushings (8)
and are at the desired angle. Retighten hex nuts on u-
bolts.
Figure 3-10
Harrow Adjustment
11891
16297