Great Plains YP4025F-1670 Operator Manual - Manual (Page 73)

Great Plains Manufacturing, Inc. Table of Contents Index Adjustments 69
2014-09-08 Table of Contents Index 401-571M
Opener Depth
10HDP Opener Depth
Seeding depth on 10HDP Series is set by
frame-mounted coulter depth (if installed) and row unit
depth. Set frame height (page 24) before making row
unit depth adjustments.
10HD Series press wheel height is a stop adjustment
and not a spring adjustment. It establishes a fixed
relationship between opener depth and the closed-furrow
surface at the press wheel
Refer to Figure 75
Set opener seeding depth by adjusting press-wheel
height
. To adjust, first raise openers slightly, then lift
and slide T handles on top of openers. Initially adjust
all press wheels to the same height. Individual rows
running in tire tracks may need to be set deeper
a
.
• For more shallow seeding, slide T handles forward
toward YP40 planter.
• For deeper seeding, slide T handles backward
away from YP40 planter.
If press wheels are lifting off ground, check front-to-back
level, and increase row unit spring down force.
If press wheels are digging into ground, reduce spring
down force at the row units.
25P Opener Depth
Refer to Figure 76
The “T” handle sets planting depth by limiting the how
high the side depth gauge wheels ride relative to the
opener disks. The position of the seed tube itself is fixed
relative to the disks, and is not adjusted.
With the planter raised, lift both side depth wheels
against the stop and measure the depth of exposed
opener disk below it. Do not lift just one wheel, as the 25
Series T handle sets the average depth of both wheels.
Alternatively, check the actual furrow depth with openers
lowered and pulled forward in field conditions.
To adjust seed depth, pull the “T” handle up and back,
move it forward or aft, and set it back in a different pair of
holes in the scale.
• For shallower planting, move the “T” handle forward.
• For deeper planting, move the “T” handle back.
Check opener down-pressure and press wheel(s) after
adjusting depth. See “25P Series Down-Pressure” on
page 72, and “Press Wheel Adjustment” on page 89.
a. If frame-mounted coulters are installed, adjust them for tire tracks before adjust T-handles. The coulter depth adjustment may be all
that’s required to compensate for tracks.
Figure 75: 10HDP:
Initial Opener Depth
27124
1
2
F
B
1
Figure 76: 25P:
Opener Depth
29330
{
Inspect Furrow Here
1