That s because modern door hardware uses a hidden mechanism called a detent to fasten the doorknob that can only be released using a small screwdriver tip or the end of a paper clip depending on your style of hardware.
Tightrn security door handle.
I show how i tightened my loose door handle that is made by kwikset.
Determine whether you will need an allen wrench or a screwdriver based on the style of set screw which you will find on the bottom of the door lever.
Occasionally the door handle may instead use a different screw type such as a phillip s head screw.
Remove the screw and slip the lever handle off the rod.
Tighten internal screws loose door knob or loose door handle.
If that is the case use a screwdriver instead of an allen wrench.
Insert the tip of the wrench into the screw and rotate the tool counter clockwise until the faceplate is free to slide off.
Step 2 inspect the rod s surface and locate the groove where the set screw needs to be secured.