post the model of the pressure washer and if pump has one it too. And I if the packing, seals, and check valves for an individual to replace.
As said cost, labor, and availability are the limiting factor vs a new pump or a new pressure washer. Prices of pumps have come down with the Chinese getting involved so repairs are getting very rare.
It seems everybody has got a wrench. I just had a customer to his governor in his Kohler engine by trying to using YouTube instructions when it was a carb problem. When you have no experienc it is best to leave it to us pros.