Great Plains PH-20 Operator Manual - Manual (Page 40)

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Section 6 Options
PH-15, PH-20, PFH-15 and PFH-20 Precision Fertilizer Hitch 148-365M 12/29/2011
Great Plains Mfg., Inc.
Markers
Hydraulic markers are available. The units have a cast
hub, tapered roller bearings and a bolt-on blade to leave a
mark for you to follow on the next field pass. The markers
are tied together hydraulically through a sequence valve
for easy operation on one hydraulic circuit.
For information on how to adjust the markers, refer to
Marker Adjustments, “Adjustments,” page 28. For infor-
mation on maintaining the markers, refer to Lubrication,
“Maintenance and Lubrication,” page 33.
To order marker attachments, contact your Great Plains
dealer.
Markers Part Number
15-Foot All Seeds Dual Markers 113-469A
20-Foot All Seeds Dual Markers 113-470A
18147