[header] How to set up a pressure washer [title] Connect the high-pressure hose that comes with the pressure washer. [step] Insert the hose into the high-pressure inlet, usually found on top of the water inlet for the garden hose, and tighten it. [title] Attach the garden hose. 
[step] Thread a coupler attachment onto your garden hose. A coupler attachment twists on to the end of the garden hose.