Great Plains YP1220 Operator Manual - Manual (Page 48)

44 YP1220 Great Plains Manufacturing, Inc.
401-506M 03/14/2012
Row-Unit Down Pressure
Refer to Figure 46
An adjuster cam sets row unit spring down pressure
individually for each row unit. This is useful for penetrat-
ing hard soil and planting in tire tracks.
To adjust down pressure, use a tool to lift and rotate the
adjustment cam.
1. Raise the drill. Although this adjustment can be
made with the drill lowered, the springs will be in
tension, and will require more effort. The extra force
required may also damage tools.
2. Put tractor in Park and shut it off.
3. Position tool under upper spring link, and pull it
back and up.
4. Move the adjustment cam to the new setting on the
spring adjust bar
.
Note: Do not set all rows higher than notch two. Using
high settings across all rows causes uneven
planting. Individual rows may be set higher if run-
ning in tire tracks.
Row-Unit Planting Depth
Refer to Figure 47
Side depth wheels
outside the row-unit disks con-
trol row-unit planting depth. The position of an adjustable
stop, using the T-handle
, determines planting depth.
Set planting depth by adjusting handle . To adjust, first
raise row-units slightly, then lift and slide handle on top of
row-units. Adjust all handles to the same setting.
For shallower planting, slide handle forward toward
planter.
For deeper planting, slide handle back away from
planter.
Cam Notch Pounds
zero (out of notch) Maintenance Only
one 100
two 165
three 225
tip Do Not Use
FigureSpacer:
Figure 46
Row Unit Minimum & Maximum
12104
8
3
2 2
1
8
1
2
3
8
Figure 47
Side Depth Gauge Wheels
27387
1
2
3
1 2
3
3