Great Plains YP825A Operator Manual - Manual (Page 94)

90 YP425A, YP625A and YP825A Table of Contents Index Great Plains Manufacturing, Inc.
401-651M Table of Contents Index 2014-08-15
Twin Rows
were timed
but became
out of time. Timing will change when a
population change has been
made. Re-time meters from the population based timing chart.
Chain has jumped. Check sprockets and chain for excessive wear or rusty stuck
links.
Population Related
Problem Cause Solution
General Troubleshooting
Problem Cause Solution
Population
Alarms See “Population Troubleshooting Charts” on page 86.
Excess Seed
Remaining See “Population Troubleshooting Charts” on page 86.
Field size different. After ruling out population problems, re-check geography.
Excessive gaps between planter
passes. Adjust marker, page 165.
Seed
Consumption
Too High
See “Population Troubleshooting Charts” on page 86.
Field size different. After ruling out population problems, re-check geography.
Excessive overlap.
Irregular shaped field. Adjust marker, page 165.
Rows Not
Planted If not detected by optional seed
monitor, check for plugged row-unit
seed tube Lift planter, expose bottom of seed tube and clean out.
Uneven
seed
spacing See “Population Troubleshooting Charts” on page 86.
Excessive field speed. Reduce field speed.
Unclean seed. Use clean seed.
Damaged seed tube Inspect; repair or replace.
Seed-Lok
®
plugging. Lock up Seed-Lok
®
, page 80.
Row-unit discs not turning. See “Row-unit discs not turning freely” in this
Troubleshooting chart.
Worn/rusted sprockets and/or chain
idler or bearings. 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 Lubricant” on page 119.