1. Park the pressure washer on a large piece of tarp. This will help protect your work surface and prevent the soap from staining anything else.
2. Locate the detergent injector hose on the pressure washer. It is typically a small, clear tube with a black or gray cap.
3. Remove the cap from the detergent injector hose.
4. Insert one end of the detergent hose into the soap bottle you will use.
5. Place the other end of the detergent injector hose into the detergent injector port on the pressure washer.
6. Screw the cap onto the detergent injector port until it is snug.
7. Turn on the power washer and allow the soap to flow through the detergent injector hose and into the pressure washer.
8. Once the soap is flowing through the pressure washer, begin cleaning your surface.
9. When you are finished cleaning, turn off the pressure washer and disconnect the detergent hose from the soap bottle and the pressure washer.
10. Store the detergent hose in a safe place.