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Engine: Drives the high pressure pump. High Pressure Hose: Carries the pressurized water from the pump to the gun and spray wand. Spray Gun: Connects with spray wand to control water flow rate, direction, and pressure. Quick Connect Spray Wand: Allows the user to quickly change out high- pressure nozzles. See How To Use Spray Wand instructions in this section. Chemical Hose (not shown): Feeds cleaning agents into the pump to mix with the water. See How To Apply Chemicals/Cleaning Solvents instructions in this section. Spray Gun BASIC ELEMENTS OF AN 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. Fuel Valve Lever: Opens/closes connection between fuel tank and carburetor. Engine Switch: Enables and disables ignition system. 9- ENG A09608 PRESSURE WASHER TERMINOLOGYPSI: 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. GPM x PSI = CUBypass Mode: Allows water to re-circulate within pump when the gun trigger is not pulled. Allowing the unit to run for more than two minutes without the gun trigger pulled could cause overheating and damage to the pump. 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. 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 FEATURESPRESSURE ADJUSTMENTSThe 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 methods. 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. 2. Change to the 40. nozzle - (white) this nozzle delivers a less powerful stream of water and a wider spray pattern. DO NOT attempt to increase pump pressure. A higher pressure setting than the factory set pressure may damage pump. 3. Adjust the pressure reg- ulator on the pump. Turn the pressure regulator knob counterclock- wise to lower pressure. Re- fer to the illustrations to identify your pressure regulator. Once you have finished using your pres- sure washer, return the pressure regulator to its original position by turning it clockwise. DONOTtrytoturnpressureregulatorknobpastthebuilt-instopordamagetopumpwillresult. Thermal Relief ...

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