Faucet is dropping it is a one handle - Moen & Villeta Two Handle Lavatory Faucet

Sorry to read about your problem, I hope this helps you out.

under the moen symbol is a set screw

I tried to help you. Please help me and Rate/Vote on my response, thanks and good luck

Remove the cap and expose the screw. Unscrew and remove handle. If it is stuck on you can buy a faucet handle puller at any hardware store for 8 - 15 dollars.

Place a few drops of vinegar into the screw hole and wait a little bit. Try removing the handle again, sounds like it is just stuck on the cartridge stem. The handle should come off first, and then the bonnet. Here's the parts breakdown for your faucet from Kohler.

Seems like you have some debris in the sprayer. Remove the aerator and see if there is any there or take it outside and force water into the aerator and hopefully it blows out through the inlet.

If head doesn't screw off, then complete handle should come off where hose attaches and screen will be in there.

Have you removed aerator ,screen etc., from end of tap, to see how flow is with it off. If good, or same as other taps when taken off of them, then you've got debris in aerator, and screen.

Is it a single handle faucet set? If so it sounds like you need to replace the stem in the faucet itself. You can get to this with a screw driver and a pair of pliers. Turn off the water to the faucet (hot and cold) and remove the handle. Once you do this you will see a clip that hols the stem in place.Remove this clip and pull the stem out with the pliers and you can find a replacement at your local Lowe's, Home Depot, etc. Pay attention to the directions when reinstalling. there is a tab that determines the top side of the stem.

water heater

Re the 'falling handle' issue, I think you misunderstood the problem, jgwhomeequip. Unfortunately for me I bought *two* similar Price Pfister faucets and both had the same problem - the water wouldn't stay on and the handle just wouldn't stay up.
I took mine apart looking for something to adjust, fruitlessly. Put it back together and have lived with it like that for ~2 years.

Finally I decided to not be a knucklehead any longer and call the manufacturer. Once I got through to their rep (on a Saturday no less!) she helped me identify the model I had (a 533-50SS, just FYI), and asked me 'what finish'? I replied 'stainless steel' and she promptly replied, 'I'm going to mail you out new lighter handles to replace the ones you have'.

Brilliant! Gold star for PP for standing behind their product well past the warranty for what was apparently a common problem. Replacing the handle will take about 10 seconds per faucet.

I only wish I had got of my a$$ and called them 2 years ago.

1-800-PFAUCET (1-800-732-8238)

Consumer Service Department:
7:30am to 4:00pm PST, Mon-Sat
1-800-PFAUCET (1-800-732-8238)
Fax: 1-800-713-7080

Hope that's helpful to somebody.

Your problem is a simple one.

1. Turn off water to faucet.
2. Place a towel(s) in the base of the sink(s) to prevent any parts from going down drain.
   
3. Remove the handle to the faucet. (single handle only)
   
4. If not a single handle then remove spout from faucet.
5. If a single handle remove cap carefully and any loose parts.
6. Gently turn spout side to side while lifting to remove.
7. You will see a hole with a very small valve where the water comes out to the spout on the base of the faucet.

1. Remove this valve (which is a backflow preventer) and replace.
2. Reassemble and test.
   

Problem solved.