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3S-3000HD
Great Plains Manufacturing, Inc.
195-068M
2019-03-12
Marker Speed
The procedure for adjusting marker speed is different for
single marker with needle valve and dual markers with
sequence valve.
Single Marker/Needle Valve Speed
A needle valve controls the folding speed. The needle
valve is near the rod end of the marker cylinder.
With tractor idling at a normal operating speed, adjust
marker folding to a safe speed. Turn adjustment knob
clockwise to reduce folding speed or counterclockwise to
increase folding speed. Excessive folding speed could
damage markers and void the warranty.
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Dual-Marker/Sequence Valve Speed
There is one adjustment screw for unfolding speed
and one for folding speed . You can identify adjustment
screws by markings stamped in valve body.
Turn adjustment screws clockwise ( : slower) to
decrease [un]folding speed and counterclockwise
( : faster) to increase [un]folding speed.
With tractor idling at a normal operating speed, adjust
marker folding to a safe speed. Excessive [un]folding
speed could damage markers and void the warranty.
After adjusting the folding speed, tighten jam nuts on hex
adjustment screws to hold settings.
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Figure 65
Needle valve Adjustment
15625
1
2
F
S
S
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Figure 66
Sequence Valve Adjustment
14048
1
2
S
F