Great Plains YP1220 Operator Manual User Manual
Page 55
Great Plains Manufacturing, Inc.
Troubleshooting
51
03/14/2012
401-506M
Uneven
seed
spacing.
Excessive field speed.
Reduce field speed.
Unclean seed.
Use clean seed.
Seed-Lok plugging.
Row-unit disks not turning.
See “Row-unit disks not turning freely.” in this Trouble-
shooting chart.
Plugged row-unit seed tube.
Lift up planter, expose bottom of seed tube and clean out.
Worn/rusted sprockets and/or chain
idler.
Check and replace any worn/rusted sprockets or chain idlers.
Partially plugged row-unit seed tube. Lift up planter, expose bottom of seed tube and clean out.
Lack of proper seed lubrication on
seed.
See “Seed Lubricants” on page 71.
Use of excessively sticky or wet
seed treatment.
Check your treatment.
Inadequate contact wheel spring
pressure.
Check for correct tire air pressure, page 74.
Air pressure in contact wheel incor-
rect.
Check for correct tire air pressure, page 74.
Uneven
seed depth
Excessive field speed.
Reduce field speed.
Planting conditions too wet.
Wait until drier weather.
Excessive or improper row unit down
pressure spring setting.
See 25 series row-units, page 43.
Damaged seed tubes.
Check seed tubes for damage.
Seed-Lok building up with dirt.
Row-unit not penetrating low spots.
Adjust row-unit, see instructions beginning on page 43.
Rough planting conditions.
Rework the field.
Seed firmer not in place and set to
correct tension.
See “Seed Firmer Adjustments” on page 47.
Row-unit
disks not
turning
freely.
Row-unit plugged with dirt.
Clean row-unit.
Planting conditions too wet.
Wait until drier weather.
Seed-Lok is plugging row-unit.
Failed disk bearings.
Replace disk bearings.
Bent or twisted row-unit frame.
Replace row-unit frame.
Partially plugged row-unit seed tube. Lift up planter, expose bottom of seed tube and clean out.
Press
wheels not
compacting
the soil as
desired.
Too wet or cloddy.
Wait until drier weather or rework ground.
Use of incorrectly shaped tire for
your conditions.
Wedge shaped wheels work best on narrow spacings and in
wet conditions. Round edge wheels work best in wider row
spacings and drier conditions.
Incorrect press wheel depth.
Reset press wheel depth, page 44.
Problem
Cause
Solution