The answer to 'how to maintain pressure washer' is to regularly clean and service your pressure washer to keep it operating efficiently and safely. This includes cleaning the nozzle, checking the pump oil, and storing the unit properly when not in use.
Start by inspecting the pressure washer nozzle after each use and clearing any debris or clogs. Use the manufacturer's recommended detergent and avoid using harsh chemicals that can damage the pump. Check the pump oil level monthly and change it annually or as recommended. Properly store the pressure washer when not in use, keeping it out of direct sunlight and protected from the elements. If you notice any issues like leaks or unusual noises, it's best to have a professional technician inspect and repair the unit.