Great Plains 3N-3020 Operator Manual - Manual (Page 41)

3/29/2012 196-366M
39 Adjustments
Setting Seed Rate Handle
Refer to Figure 24
There is a seed rate adjustment handle for each
drill section. Position handles to the setting indi-
cated on the seed-rate charts.
To adjust handle, loosen wing nut under handle
and slide handle until indicator lines up with cor-
rect setting.
Positioning Seed Cup Doors
Refer to Figure 25
For wheat and other small seeds, move seed cup
door handles to highest position. For soybeans
and other large seeds, lower handles to second
position. If excessive seed cracking occurs, lower
handles to third position. For seed cup clean out,
move handles to fourth position, wide open. Make
sure all handles are in the same position before
drilling.
NOTE: Do not open seed cup door to wide open
position with seed in the box unless complete
cleanout is desired. The door may be difficult to
close off once it is opened.
Figure 24
Seed Rate Adjustment
Seed Rate
Adjustment
Handle
18840
Figure 25
Seed Cup Door Adjustment
Seed Cup
Door Handle
18841