Bissell AIRRAM 2144 Series User Manual page 12

The brush roll can now be removed,
starting at the button end.
Re-insert the brush roll, starting by
locating the end furthest away from
the button. Then push the brush roll
into the AirRam until it clicks into
place.
12 www.BISSELL.com
Clean the brush roll as needed.
"click"
Replace the battery by sliding it
down. It will click into place.