It may be hidden behind a circular plate around the lever.
How to fix a loose door handle without visible screws.
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.
It only takes a minute to pop off the cover plate.
Expose hidden set screws.
Remove the inside doorknob by locating the button like our model metal tab or wire clip on the side of the knob that acts as a release.
This plate is known as a rose and can almost always be removed by hand.
Examine the edge of the door handle s metal plate on the interior side of the door looking for a hidden recessed screw.
Try twisting or pulling the rose away from the door to expose the screws.
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.
Using an awl or small screwdriver push the button in.
To depress the detent use the end of a metal paper clip or the point of an awl inserting it into the hole and pressing the detent down while twisting and removing the door handle shaft off the spindle.
I ve done a bunch of googling and watched some youtube videos but they all either have 1 visible screws 2 a hole that you can press a pin or hex key into or 3 are kwikset handles that you twist and pull.
A set screw is typically installed along the base of the lock on the interior side of the door.
Tighten a loose doorknob that has hidden chassis screws.
This type is found commonly on lever style door handles.