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How to hook up a karcher power washer with a water feed hose

Updated February 21, 2017

Karcher power washers are designed for quick connection and disconnection from the water source. They have a standard hose size inlet valve and a water filter at the intake to ensure that there are no particulates in the water shooting out under high pressure.

Turn off and disconnect the washer. Slide the supply hose (without any water flowing) to the intake valve located on the side of your pressure washer.

Line up the garden hose opening to the valve coupler opening. Turn the inlet nut clockwise to tighten down the connection.

Turn the water supply on full and ensure that there are no leaks between the hose and pressure washer inlet valve. Tighten the valve coupler more if you need to.

Tip

Ensure that your water hose has a flow rate of at least 10 litres per minute (2 1/2 gallons per minute).

Warning

Never use a dirty water source or water warmer than 37 degrees Celsius (100 degrees Fahrenheit).

Things You'll Need

  • 18 mm (3/4 inch) water supply hose
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