Great-plains NTA2007HD Operator Manual User Manual Page 100

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96 Great Plains Manufacturing, Inc. Contents Index NTA607/2007HD
166-283M Contents Index 04/04/2011
Marker 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. The screw
marked “Raise” controls the folding speed. The screw
marked “Lower” controls unfolding speed.
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.
Marker Disk Adjustment
There are four adjustments for marks:
Refer to Figure 87
1. Loosen the nuts securing the guard and
bracket . Change the angle of mark by shifting the
bracket, which has slotted holes. Re-align the guard
with the disk edge. Tighten the nuts. Re-check
marker extension.
2. For a larger change in mark angle, the bracket has a
choice of small slotted holes on one side. Loosen
both nuts. Remove the bolt on the two-hole side. Re-
insert the bolt in the alternate hole. Re-align the
guard with the disk edge. Tighten the nuts. Re-check
marker extension.
3. Mark visibility may be enhance by inverting the
disk on the disk axle. Remove the outer axle nuts
(not shown). Invert the disk and depth gauge. Re-
secure with nuts.
Bout/Pass Overlap or Excess Gap Risk:
Check marker extension after adjusting. These adjustments
may cause minor or major changes to marker extension, which
could result in incorrect gaps between bouts/passes, or bout/
pass overlaps.
MetaData: End of Adjustments
1
2
F
S
S
Null4:
Figure 86
Sequence Valve Adjustment
14048
1
2
S
F
Null4:
Figure 87
Left Mark Adjustments
31199
4
6
7
5
Sharp Object Hazard:
Marker disks may be sharp. Use caution when making adjust-
ments in this area. If removed, always re-install guard above
marker disk.
4 5
6
7
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