M0188-01Model 3000
TM
Machine Operation
2-14
Rev. 9/17
Two flow control valves determine amount of oil flow restriction controlling row marker travel speeds. One flow control
valve controls lowering speed and one controls raising speed of both markers.
NOTE 1: Hydraulics operate slowly when oil is cold. Make all adjustments with oil warm.
NOTE 2: On a tractor where oil flow cannot be controlled, tractor flow rate may be greater than rate marker
cylinder can accept. Hold tractor hydraulic control lever until cylinder reaches end of its stroke. This occurs
most often on tractors with an open center hydraulic system.
NOTE 3: On tractors with a closed center hydraulic system, set hydraulic flow control so detent functions
properly.
1. Loosen jam nut and turn control clockwise (IN) to slow speed or counterclockwise (OUT) to increase speed.
2. Tighten jam nut after adjustments are made.
ROW MARKER SPEED ADJUSTMENT
Marker lower flow control
Marker raise flow control
Row marker flow control valves
An optional dual valve hydraulic system allows planter to be raised and lowered without operating row markers. Row
markers are controlled on alternating sides through a tractor SCV. The sequencing valve directs flow to marker on
opposite side each time a row marker is raised. When lower row marker is selected, row marker on opposite side of
row marker last raised is lowered. When raising planter for a waterway the row marker stays down, clears the ground,
does not disturb the waterway, and continues to mark when planter is lowered.
Both row markers can be down at the same time. Lower planter and row marker. Move tractor lift control (single valve)
or marker control (dual valve) to raise and immediately return it to lower. This shifts the row marker control valve and
lowers remaining row marker.
Excessive row marker travel speed
can damage row markers. Adjust flow
controls before row markers are first
used.
NOTICE
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