GREAT PLAINS 1510HDP, Operator'S Manual

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Great Plains | 118-949M | 2018-07-03 Table of Contents Index 58
1525P and 1510HDP Table of Contents Index Adjustments
Folding Speed with Needle Valves
Refer to Figure 75
A needle valve controls the folding speed of markers
that are plumbed separately. 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.
Folding Speed with Sequence Valve
Refer to Figure 76
If markers are tied together with an optional sequence
valve, adjust folding speed with hex adjustment screws
on the sequence-valve body. There is one adjustment
screw for raising speed
and one for lowering speed .
Identify adjustment screws by markings stamped in valve
body.
With tractor idling at a normal operating speed, adjust
marker folding to a safe speed. Turn adjustment screws
clockwise to decrease folding speed and
counterclockwise to increase folding speed. Excessive
folding speed could damage markers and void the
warranty.
After adjusting the folding speed, tighten jam nuts on hex
adjustment screws to hold settings.
Figure 75
Needle Valve
17620
1
1
Figure 76
Speed Adjustment, Sequence Valve
14048
1 2