Great Plains 3N-3020P Operator Manual - Manual (Page 37)

4/23/2010 196-248M
35 Adjustments
Press Wheel Adjustments
(20 Series Openers Only)
An adjustable spring in the press-wheel mecha-
nism creates the down pressure needed to close
the seed trench. The amount of force needed will
vary with field conditions.
Refer to Figure 18
To adjust, move adjustment handle as shown.
• For less down pressure, move handle forward
toward drill.
• For more down pressure, move handle back
away from drill.
NOTE: Increased press wheel spring force
may require increased opener down force to
maintain depth.
Refer to Figure 19
NOTE: The factory setting on the press wheel
is staggered to achieve optimum residue flow.
If you want to adjust press wheels from stag-
gered to even, remove 5/8 inch bolt (1), lock
washer (2) and nut (3). Reinstall spacer (4),
press wheel (5) and hardware to the other hole
location.
16629
Hole
locations
18410
Figure 18
Spring adjustment
Figure 19
Press wheel setting