The answer to 'best way to clean pressure washer' is to follow a regular cleaning and maintenance routine. Start by disconnecting the pressure washer from the water supply and power source. Then, remove and clean the nozzle, wand, and hose to remove any dirt, debris, or chemical buildup. Next, use a soft-bristle brush and mild detergent to scrub the exterior of the pressure washer, being careful not to get water in the engine or motor. Finally, store the pressure washer in a dry, protected area when not in use.
Proper cleaning and maintenance will help extend the life of your pressure washer and ensure it continues to perform at its best. It's also a good idea to refer to the manufacturer's instructions for specific cleaning and care recommendations.