Great Plains 2420 Operator Manual - Manual (Page 18)

16
Section 3 Adjustments
2400, 2410 and 2420 Three-Point Drill 118-706M 5/15/06
Great Plains Mfg., Inc.
2420
To adjust down pressure, raise drill. Refer to Figure 3-4.
Use a crowbar or other lever to lift spring plate (1) off re-
movable pin (2). Remove pin, then move spring plate to a
new position. Replace pin to hold spring plate in its new
position.
Figure 3-4
Opener Spring Adjustment, 20 Series Openers
Move spring plate forward to decrease down pressure.
Move spring plate back to increase spring pressure. Fig-
ure 3-5 shows maximum and minimum spring settings.
Maximum Pressure Minimum Pressure
Figure 3-5
Spring Pressure, 20 Series Openers
A spring in the press-wheel mechanism creates down
pressure on the press wheels. The amount of force need-
ed to close the seed trench will vary with field conditions.
To adjust, move adjustment lever shown in Figure 3-6.
• For less down pressure, move handle forward toward
drill.
• For more down pressure, move handle back away
from drill.
Figure 3-6
Press Wheel Adjustment, 20 Series Openers
Opener Depth
Set opener seeding depth by adjusting T-handles. To
adjust, first raise openers slightly, then lift and slide T-han-
dles on top of openers as shown in Figure 3-7. Adjust all T-
handles to the same setting.
• For shallower seeding, slide T-handles forward to-
ward drill.
• For deeper seeding, slide T-handles back away from
drill.
Figure 3-7
Opener Depth
17627
16630
16629
12100