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.
Tightrn security door handle.
I show how i tightened my loose door handle that is made by kwikset.
Tighten internal screws loose door knob or loose door handle.
If that is the case use a screwdriver instead of an allen wrench.
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.
In order to tighten the screws in a loose door knob or loose door handle you need to work on removing your loose door knob or loose door handle from the door that it is currently on.
Remove the screw and slip the lever handle off the rod.
The detent is a spring activated pin concealed or small thin plate attached to the spindle that protrudes into a doorknob notch which prevents rotation.
Insert the tip of the wrench into the screw and rotate the tool counter clockwise until the faceplate is free to slide off.