M0290-01Model 4900
TM
Row Unit Operation
3-2 Rev. 8/19
Eccentric bushings in the wheel arm stop allow for lateral adjustment of covering discs/single press wheel assembly.
Use a ¾" wrench to loosen hardware attaching closing wheel arm to wheel arm stop. Use another ¾" wrench to turn
eccentric bushings until covering discs/single press wheel assembly is aligned with seed trench. Tighten hardware. Two
sets of holes in mounting arm locate covering discs for staggered or side-by-side operation. Five sets of holes in each
disc bracket allow ½" incremental blade depth adjustment. Slotted holes in disc mount and bracket allow for 0° - 15°
blade angle adjustment. Adjust covering discs on all row units to similar settings.
Check operation of covering discs/single press wheels after adjusting planting depth. Initial press wheel down force
spring setting is 2½" between mounting arm tab and locking nut. Loosen ½" locking nut and turn adjusting bolt in to
increase down force or out to decrease down force. Tighten locking nut against spring plug. Adjust all row units to a
similar setting.
COVERING DISCS/SINGLE PRESS WHEEL ADJUSTMENT
½" Locking nut
2½"
Adjusting bolt
Tab
Wheel arm stop
Eccentric
bushing
Press Wheel Down Force Adjustment
Covering Disc Adjustments
Locate for staggered or
side-by-side operation
Blade depth
adjustment
Blade angle
adjustment
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