If your Nilfisk pressure washer is not working, it could be due to a number of reasons. Here are a few common causes and solutions
Dirty filter The most common cause of a pressure washer not working is a dirty filter. To fix this, remove the filter and clean it with water.
Low water pressure If the water pressure is low, it could be due to a problem with the water supply or the pressure washer itself. Check the water supply to make sure it is turned on and flowing properly. If the water supply is fine, then the problem could be with the pressure washer.
Clogged nozzle A clogged nozzle can also prevent the pressure washer from working properly. To fix this, remove the nozzle and clean it with a wire brush.