Great Plains NTA3007 Operator Manual - Manual (Page 188)

184 NTA907 or NTA3007 Table of Contents Index Great Plains Manufacturing, Inc.
166-371M Table of Contents Index 2012-07-02
Refer to Figure 172
1.
To adjust marker extension, loosen two U-bolt
nuts
and slide arm tube in or out. Re-secure
U-bolts.
2. Re-check chain length (page 147).
3. Re-check marker extension when changing disc
angle or direction of throw (page 115).
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.
Turn adjustment screws clockwise ( : slower) to
decrease [un]folding speed and counter clockwise
(
: 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.
Figure 172
Marker Extension Adjustment
18878
1
2
1 2
1 2
F
S
S
Figure 173
Sequence Valve Adjustment
14048
1
2
S
F