Great Plains 3N-4025P Operator Manual - Manual (Page 66)

3N-4010P, 3N-4015P, 3N-4020P and
3N-4025P
196-286M 4/23/2010
64
Uneven seed depth, continued Damaged or missing seed flaps. Replace seed flaps.
Damaged opener seed tube. Check disk spreader, page 75.orpage
77.
Partially plugged opener seed tube. Lift up drill, expose bottom of seed tube
and clean out.
Incorrect choice of coulter. Change coulters.
Opener disks not turning freely. Opener plugged with dirt. Clean opener.
Planting conditions too wet. Wait until drier weather.
Seed-Lok is plugging opener. Lock up Seed-Lok, page 55.
15 Series Opener side depth wheels
not adjusted correctly.
too tight - dragging on blade
too loose - allowing dirt between
blade and wheel
Check 15 Series Opener adjustments,
page 35.
15 Series Opener press wheel spring
force is set too high. Check 15 Series Opener adjustments,
page 35.
20 and 25 Series Opener side depth
wheels not adjusted correctly.
too tight - dragging on blade
too loose - allowing dirt between
blade and wheel
Check 20 or 25 Series Opener adjust-
ments, page 38 or page 41.
20 and 25 Series Opener press wheel
spring force is set too high. Check 20 or 25 Series Opener adjust-
ments, page 38 or page 41.
Too much blade-to-blade contact. Take shims under head of bolt and put
between opener and disk bearing, see
page 81 for information.
Failed disk bearings. Replace disk bearings.
Bent or twisted opener frame. Replace opener frame.
Partially plugged opener seed tube. Lift up drill, 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.
Coulter set too shallow. Check coulter adjustment in hitch oper-
ator’s manual.
10 Series Openers - incorrect press
wheel depth setting. Check opener adjustment, page 34.
Opener spring pressure too high. Reduce opener spring pressure.
15 Series Openers - not enough pres-
sure on press wheels. Check opener adjustment, page 34.
20 and 25 Series Openers - not
enough pressure on press wheels. Check opener adjustment, page 38 or
page 41.
Problem Cause Solution