Unplug the vacuum from the outlet.
Open the connection port on the top of the cleaning head.
Slip the small end of the hose attachment into the open port, being sure to match the tabs to lock it in place.
Insert the solution tube from the end of the hose attachment into the solution connection port on the right side of the vacuum head.
Connect the carpet cleaning head to the end of the tube so that it locks into place.
Fill the water tank of the Hoover vacuum with clean water and detergent container with "Hoover Carpet/Upholstery detergent." Consult the user guide for proper filling methods.
Position the vacuum at the bottom of the stairs.
Plug the vacuum into a grounded electrical outlet.
Turn the rinse settings to "Wash-AutoRinse," then turn the vacuum "ON."
Hold the carpet cleaning attachment parallel to the first step and one inch above it. Press the trigger to release the spray in an even stroke forward.
Press the head of the attachment against the step and near the riser, then hold the trigger and slowly pull backward.
Lift up the attachment head and make a second stroke backward but this time without holding the trigger.
Repeat this process for each step. Unplug the vacuum and move it to the top of the steps if the hose cannot reach the higher steps.