Great Plains NTA1300 Operator Manual - Manual (Page 28)

26 NTA 1000 and NTA 1300 148-528M 5/26/2006
Great Plains Mfg., Inc. Adjustments
Marker Adjustments
Folding Speed
Refer to Figure 34
Adjust folding speed with hex adjustment screws on the
sequence-valve body. There is one adjustment screw for
raising speed (1) and one for lowering speed (2). 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 counterclock-
wise 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.
Disk Adjustments
Refer to Figure 35
If mark left by marker disk is not easy to see, change disk
angle to make a wider mark. Loosen two 1/2-inch carriage
bolts (1) holding disk mount. Rotate disk mount as
desired.
If the marker disk is not square with the ground when the
marker is lowered in the field, or if marker arm tends to fold
up while lowered in the field, change disk angle relative to
ground. Loosen 1/2-inch bolts (2) and rotate marker
mount until marker disk is square with ground.
To adjust where the disk marks, loosen u-bolt (3) and slide
marker-mount tube in or out as necessary. Re-tighten u-
bolt.
14048
15667
Figure 34
Speed Adjustment, Sequence Valve
Figure 35
Disk Angle