G'day Mf and Tyler
(Unless you have already tried this below )
The first thing I would do is remove the high pressure hose set+trigger gun then turn the power on
when the supply water is on and connected then see if the pressure washer pushes water out at a
higher pressure than no power connected ,if it does you know there is nothing wrong with the unit
and just the wash gun needs repairing.
Cheers
Max.
