22
SYMPTOM
PROBABLE CAUSE
REMEDY
Engine will not start Various engine problems
Refer to the Engine Manual accompanying your unit.
Unit components are frozen.
Allow to thaw. If any part of the unit becomes frozen;
excessive pressure may build up in the unit. This can
cause the unit to burst, resulting in possible serious injury
to the operator or bystanders.
No discharge at
nozzle when trigger
mechanism is
squeezed.
Inadequate water supply.
Ensure hose is 3/4" diameter and incoming water supply
is turned on. Ensure the water is turned all the way on.
Low or fluctuating
pressure.
Kink in water inlet hose.
Remove kink.
Water inlet screen obstructed.
Remove screen, clean, or replace.
Pump sucking air. (Prime eliminated)
Tighten all water intake connections Eliminate leaks in
intake line.
Incorrect nozzle installed on gun.
Insert high pressure nozzle.
Obstructed or worn spray nozzle.
Remove, clean or replace.
Damaged or obstructed valve assy. on pump.
Remove, clean or replace.
Pump packings worn.
Replace packings.
Unloader/bypass valve not operating correctly.
Repair or replace.
Water is leaking at
safety relief valve.
Unloader malfunction.
Detect and correct unloader problem.
Pressure switch malfunction.
Detect and correct pressure switch problem.
Safety relief valve is defective.
Replace safety relief valve. NEVER run unit without safety
relief valve. Doing so can cause an explosion!
Oil appears milky
or foamy.
Water in oil.
Change pump oil. Fill to proper level.
Oil leaking from
unit.
Worn seals or o-rings.
Consult customer service.
Detergent will not
siphon
Detergent strainer is not completely submerged
in detergent solution.
Check, submerge if necessary.
Detergent strainer obstructed.
Inspect, clean, or replace.
Detergent hose cut, obstructed or kinked.
Inspect, clean, or replace.
Detergent adjusting knob turned to closed
position.
Open adjusting knob. Refer to "Cleaning with Detergents".
Nozzle assembly is plugged.
Clean or replace.
Water flows back
into detergent
container.
Ball & spring in Venturi reversed, missing, or
corroded.
Remove, clean, or replace.
Water flows from
the nozzle when
the trigger gun is
locked in the "OFF"
position
Trigger gun is malfunctioning.
Repair or replace.
Blower motor will
not run. (Burner will
not ignite without
blower running)
Burner/Blower motor malfunction.
Repair or replace.
Belt broken or slipping on generator.
Adjust or replace as necessary.
TROUBLESHOOTING