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Fertilizer flow rate slow or stopped.
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Excessive drive tire slippage.
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Unit Mounted Single-Disk Injection Opener Only: Excessive fertilizer manifold pressure due to too small nozzle or plugged nozzles.
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Clean nozzles or increase nozzle size per the rate chart.
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Reduce row unit down force, or check drive for misalignment or binding.
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Plugged nozzle.
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Unit Mounted Single-Disk Injection Opener Only: Clean nozzle.
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Plugged strainer.
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Clean strainer.
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Kinked delivery hose at wings or at row.
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Fix or replace pinched hose.
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Not enough pressure in distribution manifold (Injection Coulter).
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Unit Mounted Single-Disk Injection Opener Only: Use smaller nozzle to raise manifold pressure. Add gauge to monitor pressure.
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Drive tire or contact tire pressure low.
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Inflate to proper pressure.
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| Symptom |
Problem |
Solution |
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Fertilizer rate uneven row to row. (Frame Mounted Single-Disk [Low Pressure-Flow Divider Delivery] Only)
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1 psi check valves dirty or stuck.
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Inspect check valves. Clean or replace as necessary.
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Incorrect hose routing.
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Make sure there are no large hills or valleys in fertilizer distribution hose routing.
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System not primed correctly.
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Prime system and make sure that all large air bubbles are purged from distribution hoses.
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Some fertilizer hoses are pinched.
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Fix or replace pinched hoses.
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Some hoses are less than 1/2 the length of the longest hose.
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Make shortest hoses at least 1/2 the length of the longest hose.
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Fertilizer rate uneven row to row. (Unit Mounted Single-Disk Injection Opener [High Pressure-Manifold Delivery])
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Not enough pressure in distribution manifold.
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Use smaller nozzle to raise manifold pressure. Add gauge to monitor pressure.
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Nozzle plugged.
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Clean or replace.
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Nozzles of mixed sizes used.
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Use orifice or nozzle of same sizes.
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Fertilizer opener does not penetrate sufficiently. (Frame Mounted Single-Disk Only)
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Improper adjustment of pressure.
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Increase the amount of down force on the opener or lower the depth setting of the opener.
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Install heavy spring.
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Fertilizer opener penetrates too deeply. (Frame Mounted Single-Disk Only)
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Improper adjustment of pressure.
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Reduce the amount of down force on the opener or raise the depth setting of the opener.
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Install light spring.
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| Symptom |
Problem |
Solution |
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One fertilizer opener not distributing fertilizer.
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Check valve bad or installed in wrong direction.
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Replace or reassemble check valve.
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Fertilizer tube opener spout plugged.
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Inspect, clean, and remove obstruction.
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Manifold pressure too low. Unit mounted single disk injection openers only.
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Use smaller nozzles to increase pressure to between 138 kPa (1.3 bar) (20 psi)-483 kPa (4.8 bar) (70 psi). Add gauge to monitor pressure.
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Drive tire or contact tire pressure low.
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Inflate to proper pressure.
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Flow divider system hose pinched, preventing flow to opener.
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Reroute hose.
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