How to replace the spout O-rings on a single handle kitchen faucet

Here are the steps on how to replace the o-rings

Please note that the images are for reference only. They product shown in this article may differ from yours, but the information below is still relevant.

1.     Shut off the hot and cold water supply lines located under the sink.  

2.     Loosen the handle set screw part #2 (after pulling out the rubber index button), counter clockwise using a hex wrench  (1/8" or 2.5mm head).

3.     Pull up the handle part #1. If it is still difficult to  remove, loosen the set screw more.

4.     Unscrew the handle trim cap (part #3) counter clockwise by hand.

5.     Unscrew the brass adjusting ring (part # 4) counter clockwise by applying adjustable wrench on the two flat slots.

6.     Unscrew the sleeve (part #5) counter clockwise by hand and pull it up.

7.     Pull out cartridge (part # 6). If it does not pull out easily, leave it to be pulled  out with the spout.

8.     Move the spout (part #8) by rotating left to right while pulling in an upwards direction.The spout is a compression fitting piece and may need a little force to pull off.

9.     Then, you will find the faucet body exposed with 2 groves (each one has one O-ring - part # 9). Pull them out or cut them .Clean any debris that may be on the valve before replacing the O-rings.  Install the new O-rings in the same groves the old o-rings were located.

Try using a little Plumbers grease or vegetable oil around the O-rings to make an easy connection when pushing the main spout back into position.

10.     Re-install all the parts back unto the unit ( spout , sleeve, brass adjusting ring , handle trim cap , handle screw and index button).