TROUBLESHOOTING

PROBLEM

POSSIBLE CAUSE

SOLUTION

LOW WATER

Improper fuel or water in fuel

Drain fuel tank and replace with proper fuel.

TEMPERATURE

Low fuel pressure

Increase fuel pressure.

 

 

Weak fuel pump

Check fuel pump temperature. Replace pump

 

 

if needed.

 

Fuel filter partially clogged

Replace as needed.

 

Soot build up on coils

Clean coils with soot remover.

 

Lime build up on coils

Clean inside of coils usings coil cleaner.

 

Improper burner nozzle

See Burner Specifications.

WATER

Incoming water to machine warm or

Lower incoming water temperature.

TEMPERATURE

hot

 

TOO HOT

Fuel pump pressure too high

Lower fuel pressure.

 

 

Fuel pump defective

Replace fuel pump.

 

Detergent line sucking air

Tighten all clamps. Check detergent line for

 

 

holes.

 

Defective high limit switch (thermostat)

Replace.

 

Incorrect fuel nozzle size

See Burner Specifications.

 

Insufficient water supplied

Check GPM to machine.

 

Restricted water flow

Check nozzle for obstruction, proper size.

 

 

 

97-6068, 97-6131 • REV. 3/06

PRESSURE WASHER Troubleshooting Guide

15

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Shark HPB-3530, HPB-2011, HPB-3520, HPB-4020 manual Problem Possible Cause Solution LOW Water

HPB-3530, HPB-2011, HPB-4020, HPB-3520 specifications

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