Great Plains
| 118-732M | 4/4/19
52
1510P & 1520P
Adjustments
Uneven seed depth (cont’d)
20 Series Opener side depth wheels
are set too deep for soil conditions or
coulter depth.
Check 20 Series Opener adjustments,
20 Series Opener press wheel spring
force is set too high.
Check 20 Series Opener adjustments,
Incorrect spring pressure on openers. Correct spring pressure, page 26 or
Seed-Lok building up with dirt.
Lock up Seed-Lok, page 48.
Engage Seed-Lok in dry conditions,
Damaged or missing seed flaps.
Replace seed flaps.
Damaged opener seed tube.
Check disk spreader, page 62.
Partially plugged opener seed tube.
Lift up drill, expose bottom of seed
tube and clean out.
Incorrect choice of coulter.
See hitch operator’s manual.
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 48.
Drill frame height incorrect.
Check drill frame height, page 18.
Drill not level front-to-back in the field. Readjust top link to level drill.
20 Series Opener side depth wheels
not adjusted correctly.
too tight - dragging on blade
too loose - allowing dirt between
blade and wheel
Check 20 Series Opener adjustments,
20 Series Opener press wheel spring
force is set too high.
Check 20 Series Opener adjustments,
Too much blade-to-blade contact.
Take shims under head of bolt and put
between opener and disk bearing, see
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.
Acremeter does not measure
accurately
NOTE:
Acremeter is most accu-
rate when seeding back and
forth with markers with few
headlands, curves and poin-
trows.
Incorrect tire size or air pressure
Correct tire size or air pressure, page
137.
Excessive overlap or gaps between
passes.
Avoid overlap or gaps. Check marker
adjustment, page 41.
Soil conditions.
Loose soil and slippage will cause
variations in acres registered.
Check that acremeter is for your width
of drill.
Refer to drill parts manual.
Actual field size different.
Verify field size.
Problem
Cause
Solution
