Sharp MX-B401 Operation Manual page 806

Remove the dirty cleaner.
Firmly grasp the tool close to where the cleaner is attached.
Use your other hand to press down on the hook that secures the cleaner and
remove the cleaner.
6
Return the removed cleaner to the toner collection container.
Attach the new cleaner to the cleaning tool.
Align the cleaner hook with the attachment hole in the cleaning tool.
Hold the cleaner firmly and push the cleaning tool into the cleaner.
7
Make sure that the cleaner is firmly attached to the cleaning tool.
REPLACING SUPPLIES AND MAINTENANCE
47