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12- ENG
D28609
BASIC ELEMENTS OF ENGINE
Refer to the engine manual for location and operation of engine controls.
Choke Control: Opens and closes carburetor choke valve
Starter Grip: Pulling starter grip operates recoil starter to crank engine.
Engine Switch: Enables and disables ignition system.
PRESSURE WASHER TERMINOLOGY
PSI: Pounds per Square Inch. The unit of measure for water pressure. Also used
for air pressure, hydraulic pressure, etc.
GPM: Gallons Per Minute. The unit of measure for the flow rate of water.
CU: Cleaning Units. GPM multiplied by PSI.
Bypass Mode: In Bypass Mode, the pump is recirculating water because the
trigger of the spray gun is not pulled. If unit is left in bypass mode for more than
two (2) minutes, the water temperature will rise to a dangerous level and could
damage internal components of the pump. Any damage to pump due to these
causes will not be covered under warranty.
DO NOT allow your unit to operate in bypass mode for more
than two minutes at any time. Overheating of pump can
cause damage to pump.
Thermal Relief Valve: In an effort to prevent extreme damage,
pumps are equipped with a thermal relief valve. This valve will open
when the temperature inside the pump rises too high. This valve will
then release a gush of water in an effort to lower the temperature
inside the pump. Immediately after this occurs, the valve will close.
Chemical Injection System: Mixes cleaners or cleaning solvents
with the water to improve cleaning effectiveness.
Water Supply: All pressure washers must have a source of water. The minimum
requirements for a water supply are 20 PSI and 5 gallons per minute.
PRESSURE WASHER OPERATING FEATURES
PRESSURE ADJUSTMENTS
The pressure setting is preset at the factory to achieve optimum pressure and
cleaning. If you need to lower the pressure, it can be accomplished by these meth-
ods.
1. Back away from the surface to be cleaned. The further away you are, the
less the pressure will be on the surface to be cleaned.
DO NOT attempt to increase pump pressure. A higher pressure
setting than the factory set pressure may damage pump.
2. Change to the 40º white nozzle, this nozzle delivers a less powerful stream
of water and a wider spray pattern.
Thermal
Relief
Valve
3. Adjust the pressure regulator on the pump. Turn the
pressure regulator knob counterclockwise to lower
pressure. Refer to the illustrations to identify your pres-
sure regulator. Once you have finished using your pres-
sure washer, return the pressure regulator to its original
position by turning it clockwise.
DO NOT try to turn pressure regulator
knob past the built-in stop or damage to
pump will result.
Pressure
Regulator
Knob