Great Plains 3S-3000HDF Operator Manual v2 - Manual (Page 64)

60 3S-3000HD Table of Contents Index Great Plains Manufacturing, Inc.
195-068M Table of Contents Index 2014-02-11
Marker Chain Adjustment
There are two basic adjustments needed on the marker
chain, especially in new installation. These adjustments
are interrelated and should be done in the following
order:
Refer to Figure 62
Marker Lifting Slack
1.
Start with the marker in the unfolded position.
2. Loosen jam nuts . Back the full threaded adjust-
ment bolt toward nuts until the head extends as lit-
tle as possible.
3. Slowly fold the marker, observing the motion of the
disk.
If the marker disk slides across the ground more
than about a foot (30cm) before the chain and link-
age lifts it up, the chain is too long. Shorten the chain
by moving the clevis
one or two links inboard from
the end of the chain. Check the adjustment by
repeating the folding process.
If the chain is too short when the marker is unfolded,
it will prevent the end of the marker from dropping
down to follow a depression in the field. Correct this
condition by moving the utility clevis
one or two
links toward the end of the chain to make it longer.
Marker Folding Slack
1.
After the adjustments in step one have been com-
pleted, fold the marker.
2. The full threaded adjustment bolt is provided to
take the slack out of the chain while the marker is in
the folded position. Fold the marker and extend this
bolt until the slack is out of the chain.
3. Lock the bolt in this position by tightening the jam
nuts
on either side of upright channel.
FigureSpacer
Figure 62
Marker Chain
15669
1
2
3
1
2
3
3
2
1