CAUSE
• Suction strainer is blocked with
debris
• Suction hose is damaged or
crooked
• Suction hose connector gasket is
bad
• Connection is bad
• Debris is stuck in inlet or
discharge valve
• Inlet or discharge valve is
assembled improperly
• Inlet or discharge valve is
damaged or worn
• Discharge valve spring is
damaged
• Piston packing is damaged
• O-ring is damaged
• Seal & packing are damaged
• Pressure regulator valve lever in is
RUN position
• Pressure regulator is stuck
• Insufficient liquid supplied to
intake
• Pressure regulator valve ball or
valve seat damaged
• Pressure regulator valve rod is bad
• Pressure regulator valve spring
bad
• Pressure regulator valve spring is
damaged or weak
REMEDY
• Clear and clean
• Repair or replace
• Repair or replace
• Connect properly
• Clean
• Assemble properly
• Repair or replace
• Replace
• Replace
• Replace
• Replace
• Return lever to START position
• Disassemble & clean
• Diagnose under (1)
• Replace
• Adjust or replace
• Repair or replace
• Replace
PROBLEM
• Suction is Low or Absent
–Up to Suction Port
–Suction & Pressure
Parts (Cylinder Part)
–Pressure Regulator
Part
• Pressure Will Not Increase
–Suction & Pressure
Part
–Pressure Regulator
Part
Troubleshooting
Hydra Sprayer Manual 18
This power sprayer troubleshooting section shows how to diagnose and resolve problems that may occur in the
course of normal operation. If you experience a problem, take the steps indicated for the applicable diagnosis.
When you can't determine the cause of a problem or if you have any difficulty, please feel free to contact your
nearest dealer or this company's sales office. Please have the following information ready: 1. Model designation 2.
Serial number 3. Description of problem (What happened? What were you doing when it happened? What were the
conditions when it happened?) For items marked with *, please request adjustment or repair from your nearest
dealer or from this company's sales office.
WARNING: Do not change the setting of the screw that is under the cap on the top of the pressure regulator knob.
This screw absolutely must not be changed, since that will raise the pressure above rated specifications, damage the
machine, and possibly cause injury.
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