Great Plains YP825A Operator Manual - Manual (Page 70)

66 YP425A, YP625A and YP825A Table of Contents Index Great Plains Manufacturing, Inc.
401-651M Table of Contents Index 2014-08-15
Refer to Figure 70
An adjuster cam
sets down pressure individually for
each row unit. This is useful for penetrating hard soil and
planting in tire tracks. For best results always adjust
tractor tires so they are not ahead of 30in rows.
Applies to Dual-Spring Model Row Units:
(YP425 s/n B1008N-) (YP625 s/n B1043Q-) (YP825 s/n B1014S-)
Applies to Single-Spring Model Row Units:
(YP425 s/n B1009N+) (YP625 s/n B1044Q+) (YP825 s/n 1015S+)
Figure 69
25AP Series Row Unit
Spring Adjustment
31034
3
5
2
2
Cam Notch Pounds Kilograms
zero (out of notch) Lock-Up & Maintenance
one 305 140
two 330 150
three 365 165
four 425 195
five 485 220
six 545 250
tip Do Not Use
Values are down force with hoppers empty 29958
Cam Notch Pounds Kilograms
zero (out of notch) Lock-Up & Maintenance
one 255 115
two 265 120
three 285 130
four 315 145
five 345 155
six 375 170
tip Do Not Use
Values are down force with hoppers empty 31947