Great Plains YP1625 Operator Manual - Manual (Page 34)

1625
401-182M 7/12/2005
32
Coulter Adjustments
The planter is assembled so that the coulters are
set even with to 1/4” above seeding depth. This is
a good baseline setting for most seeding opera-
tions. As field conditions warrant, you can change
settings on the entire planter or individual
coulters.
Coulter Springs (Frame Mounted Coulters)
The coulter spring length is preset at 10 inches,
giving the coulter an initial operating force of 400
pounds. This setting is adequate for many difficult
no-till conditions. For lighter no-till conditions
where rocks or other obstructions are a problem,
you can lengthen the springs to protect the
coulters from impact. In heavier conditions, short-
ening the spring will increase coulter force. Refer
to the chart below for adjusting the coulter
springs.
NOTE: Any attempt to reset the coulter spring
length shorter than 9 3/4 inches may contribute to
premature failure of parts and warranty will be
voided.
Individual Coulters (Frame Mounted Coulters)
Refer to Figure 22
When coulters follow in tire tracks and do not give
satisfactory depth, individual coulters can be low-
ered by loosening the mounting clamps and
adjusting the coulter to the desired setting.
To retighten clamps, snug the hex-head clamp
bolts (1) just until the u-bolts are tight on each side
of the spring bar. Tighten nuts on u-bolts (2), then
finish tightening the hex-head clamp bolts.
NOTE: There may be as much as a 1/8-inch gap
between the clamp plates even when the coulter
is mounted securely.
Coulter Down-Pressure Chart
Spring Length Coulter Force
10 1/4 in. 300 lb.
10 in. 400 lb.
9 3/4 in. 525 lb.
10300
Figure 22
Coulter adjustment