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Glossary
Bypass mode: Allows water to re-circulate within pump when the gun trigger is not pulled.
Chemical hose: Feeds cleaning agents into the pump to mix with the water. Refer to Chemicals and Cleaning Solvents.
Chemical injection system: Mixes cleaners or cleaning solvents with water to improve cleaning effectiveness.
Choke control: Opens and closes carburetor choke valve.
Cu: Cleaning Units. GPM multiplied by PSI. (GPM x PSI = CU)
Fuel valve lever: Opens/closes connection between fuel tank and carburetor.
GPM: Gallons Per Minute. The unit of measure for the flow rate of water.
PsI: Pounds per Square Inch. The unit of measure for water pressure. Also used for air pressure, hydraulic pressure, etc.
kPa (kilopascal): Metric pressure measurement. 1 kilopascal equal 1000 pascals.
Quick-connect spray wand: Allows the user to quickly change out high-pressure nozzles. Refer to Spray Wand Nozzles.
thermal relief valve: When the temperature inside the pump rises too high the valve will open and release a gush of water in an effort to
lower the temperature inside the pump. The valve will then close.
Water supply: All pressure washers must have a source of water. The minimum requirements for a water supply are 20 PSI (138 kPa) and
5 gallons per minute.
This section provides a list of the more frequently encountered malfunctions, their causes and corrective actions. The
operator or maintenance personnel can perform some corrective actions, and others may require the assistance of a qualified D
technician or your dealer.
Problem
Engine will not start ......................................................................................................1, 2, 3, 4, 5, 6, 7, 8, 36
(refer to the engine's instruction manual for further engine troubleshooting)
No or low pressure (initial use) ......................................................................................9, 10, 11, 12, 13, 14, 15, 16
Will not draw chemicals .................................................................................................16, 17, 18, 19, 20, 21
No or low pressure (after period of normal use) ...........................................................22, 23, 24
Water leaking at gun/spray wand connection ................................................................25, 26
Water leaking at pump ...................................................................................................25, 26, 27, 28
Oil leaking at pump ........................................................................................................29, 30, 31, 32, 33, 34, 35
Pump Pulsates ...............................................................................................................12
Troubleshooting Guide
18
Code
WALT
e
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