This plate is known as a rose and can almost always be removed by hand.
How to fix a loose door handle without visible screws.
Using an awl or small screwdriver push the button in.
This type is found commonly on lever style door handles.
This type is usually found on round doorknob hardware.
It may be hidden behind a circular plate around the lever.
A set screw is typically installed along the base of the lock on the interior side of the door.
It only takes a minute to pop off the cover plate.
Expose hidden set 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.
Tighten a loose doorknob that has hidden chassis screws.
Try twisting or pulling the rose away from the door to expose the screws.
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 m trying to figure out how to tighten the handle on the front door of a new condo unit.
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.
Examine the edge of the door handle s metal plate on the interior side of the door looking for a hidden recessed screw.