how do I find out if switch or other?

General. Pressure washers use the water to operate the switch for power. If nothing happens check your fuse, if ok, you need to check the switch, you need a meter to check, or a battery and lamp, but you also have the water pressure switch to worry about. I assume that you have tried using it, without any change when you squeeze the trigger. The main switch is continuos when on, the pressure switch, will only operate at low pressure. When you do not have water coming out, pressure in the unit is high. as soon as you squeeze the trigger to use, the pressure at the switch drops, and switches on the motor

Sheepdog
February 2009

this is on a sears pressure washer 1800

matt
February 2009