Great Plains 2420P Operator Manual - Manual (Page 24)

2410P and 2420P
118-769M 2012-04-17
22
Opener Operation
Do not back up with openers in the ground. To do so will
cause severe damage and opener plugging.
For information on opener adjustments, refer to
page 25 or page 27. For more information on trou-
bleshooting opener problems, see
“Troubleshooting”, page 43.
Marker Operation
Optional marker attachments are available from
your Great Plains dealer. Before operating mark-
ers, make sure hydraulics are properly bled as
described under “Marker Adjustments”, page 38.
Dual markers equipped with a sequence valve are
powered off the same hydraulic circuit. Starting
with both markers folded, the folding sequence is:
1. Activate lever - Right unfolds; left stays
folded.
2. Reverse lever - Right folds; left stays fold-
ed.
3. Activate lever - Left unfolds; right stays
folded.
4. Reverse lever - Left folds up; right stays
folded.
5. Sequence repeats.
You can adjust marker folding speed. Refer to
“Marker Adjustments”, page 37, and adjust folding
speed to a safe rate. Folding markers at high
speed can damage markers.