OMA88864

Symptom	Problem	Solution
Fertilizer flow rate slow or stopped.	Excessive drive tire slippage.	Unit Mounted Single-Disk Injection Opener Only: Excessive fertilizer manifold pressure due to small or plugged nozzles. Clean nozzles or increase nozzle size per rate chart. Reduce row unit down force. Check drive for misalignment or binding.
	Plugged nozzle.	Unit Mounted Single-Disk Injection Opener Only: Clean nozzle.
	Plugged strainer.	Clean strainer.
	Kinked delivery hose at wings or at row.	Fix or replace pinched hose.
	Not enough pressure in distribution manifold (Injection Coulter).	Unit Mounted Single-Disk Injection Opener Only: Use smaller nozzle to raise manifold pressure. Add gauge to monitor pressure.
	Drive tire or contact tire pressure low.	Inflate to proper pressure.

Fertilizer rate uneven row to row. (Frame Mounted Single-Disk [Low Pressure-Flow Divider Delivery] Only)	1 psi check valves dirty or stuck.	Inspect check valves. Clean or replace as necessary.
	Incorrect hose routing.	Verify there are no large hills or valleys in fertilizer distribution hose routing.
	System not primed correctly.	Prime system and make sure that all large air bubbles are purged from distribution hoses.
	Some fertilizer hoses are pinched.	Fix or replace pinched hoses.
	Some hoses are less than 1/2 the length of the longest hose.	Make shortest hoses at least 1/2 the length of the longest hose.

Fertilizer rate uneven row to row. (Unit Mounted Single-Disk Injection Opener [High Pressure-Manifold Delivery])	Not enough pressure in distribution manifold.	Use smaller nozzle to raise manifold pressure. Add gauge to monitor pressure.
	Nozzle plugged.	Clean or replace.
	Nozzles of mixed sizes used.	Use orifice or nozzle of same sizes.

Fertilizer opener does not penetrate sufficiently. (Frame Mounted Single-Disk Only)

Improper adjustment of pressure.

Increase the amount of down force on the opener. Lower the depth setting of the opener.

Install heavy spring.

Fertilizer opener penetrates too deeply. (Frame Mounted Single-Disk Only)

Improper adjustment of pressure.

Reduce the amount of down force on the opener. Raise the depth setting of the opener.

Install light spring.

One fertilizer opener not distributing fertilizer.	Check valve bad or installed in wrong direction.	Replace or reassemble check valve.
	Fertilizer tube opener spout plugged.	Inspect, clean, and remove obstruction.
	Manifold pressure too low. Unit mounted single disk injection openers only.	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.
	Drive tire or contact tire pressure low.	Inflate to proper pressure.
	Flow divider system hose pinched, preventing flow to opener.	Reroute hose.

OUO6074,0000831-19-20090526