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

How do I 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. The 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 an adjustable wrench to the two flat slots.
    
6. Unscrew the sleeve (part #5) counter-clockwise by hand and pull it up.
    
7. Pull out the 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 upward 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 grooves where the old O-rings were located.
   
   
   Try using a little plumber's 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 into the unit ( spout, sleeve, brass adjusting ring, handle trim cap, handle screw and index button).