Great Plains YP4025F-1670 Operator Manual - Manual (Page 64)

60 YP4010HD/YP4025/F Table of Contents Index Great Plains Manufacturing, Inc.
401-571M Table of Contents Index 2014-09-08
Height Switch Adjustment
s/n B1057A-
Refer to Figure 62
Planter is shown in raised position for clarity of height
switch. The YP40 planter includes a sensing switch
that signals the seed monitor (and activates the optional
hydraulic meter drive), when the planter is lowered for
planting. The switch is located at the front of the right link
connecting the rockshaft and rear axle.
Although factory-preset for typical planting conditions,
Great Plains recommends adjusting this switch for your
exact field conditions and planting depth.
Crush Hazard:
Exercise extreme caution when adjusting the switch.
1. Lower the planter to the height at which seed
delivery is to begin.
2. Loosen U-bolt holding switch bracket to link .
3. Move bracket forward or rearward so that switch
toggle arm
makes contact with tool bar .
4. Tighten nuts.
Note: Switch is in “Neutral” position when planting.
Switch is “Activated” when raised.
Marker Adjustments
There are six adjustments for markers, only one of which
is routine:
• Disk Angle (covered in this section)
Even if your row spacing rarely changes, you may
need to adjust disk angle for soil conditions and
planting speed.
• Shear Bolt Replacement (Maintenance, page 98)
If a marker hangs up on an obstruction, a bolt at the
fold is designed to fail.
• Marker Cylinder Bleed (Maintenance, page 97)
Once set for a specific row spacing, this only needs
periodic checking to ensure the clamp is secure.
• Marker Extension (Initial Setup, page 145)
Once set for a specific row spacing, this only needs
periodic checking to ensure the clamp is secure.
• Marker Speed (Initial Setup, page 172)
Once initially set by your dealer, this rarely needs
modification.
Figure 62
Height Switch Location s/n B1057A-
29266
1
2
5
3
6
4
1
2 3 4
5 6
Sharp Overhead Object Hazard:
You may be injured if hit by a folding or unfolding marker.
Markers may fall quickly and unexpectedly if the hydraulics
fail. Never allow anyone near the planter when folding or
unfolding the markers.