GREAT PLAINS 2N-2410, Operator'S Manual

Page: 43 / 64

8/2/18 Table of Contents Index 196-126M
2N-2410 & 2N-3010 Table of Contents Index Adjustments 40
Marker Adjustments
Marker Chain
There are two marker chain adjustments–lifting slack and
folding slack. These adjustments should be performed
during initial marker assembly, but additional adjustment
may be needed. The adjustments are interrelated and
should be made in the following order:
Lifting Slack
1. Start with the marker in the unfolded position.
Back the full-threaded adjustment bolt down until
the head extends as little as possible. Slowly fold
the marker, observing the motion of the disk. If
the marker disk slides across the ground more
than about one foot before the chain and linkage
lifts it up, the chain is too slack. Tighten the chain
by moving the clevis one or two links at the
inside end of the chain. Recheck by repeating
this process.
2. If the chain does not have enough slack when
the marker is in the unfolded field position, the
chain will prevent the end of the marker from
dropping into field depressions. Correct this
condition by moving the utility clevis one or two
links, giving the chain more slack.
Folding Slack
Refer to Figure 26
After the adjustments in step one have been
completed, fold the marker. The adjustment bolt is
provided to take the slack out of the chain while the
marker is in the folded position. Extend this bolt until
the slack is out of the chain. Lock the bolt in this
position by tightening the nuts on either side of the
upright channel on the first marker section.
To prevent marker damage, the marker arm is attached to the
marker body with a 7/16-inch, grade 5 shear bolt. See Figure 26.
If it breaks, you must replace it with a grade 5 bolt. The bolt is
Great Plains part number 802-234C.
Adjustment Bolt
Shear Bolt
13008
Figure 26
Full-Threaded Adjustment Bolt