GREAT PLAINS YP1630F-1630, Operator'S Manual, Page: 70 / 142

Great Plains | 401-832M | 2018-07-31 Table of Contents Index 66
YP1630F-1630 and YP1630F-1670 Table of Contents Index Troubleshooting
Low or Zero
Population,
Single Row
Seed meter not engaged. Check clutch alignment and engagement (page 34).
Skips or zero rate due to skipping or broken
chain. Check for worn chain, worn idlers, low chain slack and
general chain condition (page 95).
Seed sensor obscured. Seed rate is actually
correct, but under-counted.
Clean out seed tube (page 74).
Finger Meter: broken finger Repair meter.
Finger Meter: castle nut mis-adjusted
Check that adjustment nut in meter is adjusted between
2.5 and 2.8 N-m (22 and 25 inch-pounds). (page 58).
Brush meter: Incorrect seed plate installed Check rows for identical plates.
Brush meter: Skips due to debris in plate
pocket
Inspect and clean out plate.
Foreign matter in hopper. Clean-out hopper (page 73).
Seed run-out. Refill row hopper(s).
Seed tube plugged.
Clean out seed tube. Avoid reverse motion with rows in
ground. Avoid tight turns with rows in ground.
Seed Population Too Low
Problem Cause Solution
Seed Population Too High
Problem Cause Solution
Overall High
Population
Incorrect seed rate Check seed rate charts
Ground Drive only: Incorrect Transmission
sprockets or shafts used Check Transmission sprocket tooth counts and Driver/Driven
locations.
Ground Drive only: Incorrect Range sprockets
or shafts used Check Range sprocket tooth counts and Driver/Driven
locations.
Finger Meter: Two seeds per finger (doubles)
due to seed too small. Consult with dealer regarding alternate inserts. Consider also
switching to brush meters.
Finger Meter: Check carrier plate for wear.
Finger Meter: Check for weak finger springs.
Brush Meter: Empty pockets on plates due to
matted brush.
Brush Meter: Two seeds per pocket on the
plates (doubles), due to pockets too large for
the seed
Select plates with smaller pockets.
False alarms or actual seed rate errors due to
monitor setup with incorrect row count, spacing
or active rows When troubleshooting population issues, always first rule out
seed monitor setup. Review planter configuration and monitor
setup.
Incorrect cell count
Replace seed disks with correct disks, or reset rate for current
disks (if within range).
Improper gap on speed sensor.
Check speed sensor on planter for 1.6 to 3.2 mm (
1 
16
inch
to
1 
8
inch) gap from wheel. Improper gap can cause erratic
speed signal causing monitor to falsely report improper
planting rate.
Incorrect speed sensor constant
Perform speed calibration per DICKEY-john
®
monitor manual.
Brush meter: Doubles due to incorrect plates
for crop or seed size
Use recommended plates for crop and seed size.
Sticky seeds: excess seed treatment Increase seed lubricant.