Unplug the Kirby vacuum cleaner and remove the vacuum's power cable from the electrical outlet.
Press the "Neutral" pedal on the back of the vacuum to set the machine's tech drive power assist to neutral mode.
Unzip the vacuum's outer bag and turn the disposable bag counterclockwise to remove the disposable bag from the vacuum's adapter.
Insert the new disposable vacuum bag and line the bag's cardboard with the vacuum's adapter. Turn the disposable bag's cardboard top clockwise to lock the bag into place.
Zip the outer bag up and lay down the vacuum cleaner to check the brush roll. Pull off any visible clogs to clear the machine's brush roll.
Plug the vacuum cleaner's power cord into the electrical outlet and press the "Neutral" pedal to turn on the machine.