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Row units on right-hand side of machine not planting.
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Right-hand drive shaft cotter pin sheared.
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Repair cause of pin shearing and replace cotter pin.
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Row units on left-hand side of machine not planting.
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Left-hand drive shaft cotter pin(s) sheared.
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Repair cause of pin shearing and replace cotter pin.
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Seed tubes plugging.
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Machine rolling backward when lowering.
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Lower machine while moving forward.
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Turning tractor steering wheel when machine is down and stationary. (Four Wheel Drive Tractors Only.)
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Avoid turning tractor when machine is down and stationary.
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Inconsistent seed depth.
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Planting in rough seed bed.
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Use down force spring attachment on planting units.
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Seed tubes partially plugged or improperly installed.
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Inspect seed tubes. Ensure seed tubes are hooked properly in unit shank.
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Closing wheels leave severe imprint in soil.
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Too much spring force.
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Adjust closing wheel spring.
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Closing wheels not firming soil around seed.
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Insufficient spring force.
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Adjust closing wheel spring.
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Closing wheel running on top of seed furrow.
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Improper centering.
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Realign.
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Closing wheel not applying equal force.
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Closing wheel frame not level.
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Re-level.
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Consistent shearing of drill shaft cotter pin.
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Drill shaft not aligned properly.
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Loosen bearing and align shaft.
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