How do I restore the HP Smart Tank 510 to its original factory defaults and settings?

The manual references restoring original factory defaults and settings on page 111, including a note that the printer can be placed back into network setup mode by restoring printer network settings. If more than two hours have passed since you first turned on the printer and you have not set up the printer wirelessly, you can place the printer in network setup mode by restoring the printer network settings, and the setup mode will last for two hours. (Page 11)