Take doorknob to hardware store if necessary.
How to tighten loose defiant door handle.
Loosen the setscrew in.
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 s pretty easy to fix a loose door lever handle.
Use an allen key to loosen the set screw on the side and remove the door handle use a flat head screwdriver to carefully remove the cover plate which will expose the two phillips screws take a phillips screwdriver to tighten the screw on each side this will secure the handle.
If you have a mortise style lock and lock set see illustration follow these steps.
If threaded twist on the handle on the shaft until its neatly up against the door.
Hey if joe can fix a loose lever.
If unthreaded pop the knob onto the shaft and snug to the door.
Identify the screw in the doorknob collar.
Look at the shaft to see if it s threaded or not.
Open the door so that you can access both the inner and outer doorknobs.
Using an awl or small screwdriver push the button in all the way and at the same time pull off the handle.
Tighten a loose door handle photo 1.
Look around the collar on the doorknob and identify the set screw that is threaded into the collar.
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.
Give yourself a little room to spin properly and tighten the set screw.
If you have a modern cylindrical or tubular lock set with a loose knob see how to troubleshoot lock problems.
Step 2 straighten a large wire paper clip out and insert one end into the hole until you feel the spring loaded retaining pin.
Look on the neck of the inner doorknob for a slot or hole between the back of the doorknob and the door.
From there tighten the set screw back into place.
These lock sets both.