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No product delivery with drive wheel engaged.
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Meter overload; drive pin sheared.
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Replace sheared drive pin with 2.5 mm diameter cotter pin.
Engage meter only when fan is running to avoid overload.
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Application rate above or below expected rate.
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Transmission out of adjustment.
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Adjust transmission to proper setting for desired application rate. See Rate Chart for setting and perform meter rate check.
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Faulty meter drive transmission.
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Check transmission output. See your John Deere dealer.
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Frequent shear pin failures.
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Meter cup fills venturi with seed during transport.
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Raise opener rockshaft to maximum height before transport.
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Seed treatment build-up on metering wheels.
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Clean meter wheels.
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Drive chain misalignment.
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Check chain alignment and correct.
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Wet, swollen seed in meter.
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Clean seed out of meter.
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Drive sprocket engagement off.
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See INSTALLING METER DOOR ASSEMBLY in Operating Machine-Metering section.
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Transmission output and clutch shafts mis-aligned.
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Align clutch shaft to transmission output shaft.
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Shear couplers spread apart.
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Shift clutch shaft toward transmission to compress shear couplers together.
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