1. Turn off water.

2. Unscrew housing from base by turning it counterclockwise using the supplied filter wrench.

Note: If the housing seems stuck, soak base of the housing in a mixture of hot water and a little vinegar for about 10 minutes.

3. Remove the old cartridge and discard. At this point, it is recommended to clean the housing from inside using mild soap.

4. Check the O-ring for wear & tear. (The O-ring rests in a groove 1" down in the housing – black rubber ring as shown in the picture).

• If it is worn, replace it.
• If it is in good working condition, lubricate it with food-grade petroleum jelly to ensure it lies flat and prevents leaking.

5. Unwrap filter cartridge from plastic cover and place it on the filter base with the side marked up facing up (see picture on the right). Put the housing back on.

Note: Before putting the housing back on, put some petroleum jelly on the plastic threads. This will make it easier to unscrew the housing the next time you change your filter cartridge.

6. Pick up the filter base and screw the housing tight enough with hand first. Doing it this way will prevent the O- ring from slipping loose and causing the filter to leak. Once the filter housing is hand tight, tighten it an additional 1/4 to 1/2 turn with the supplied filter wrench to prevent any leakage.

7. Place the system on a flat surface and turn on water supply. Let the water run for a few minutes to flush out normal carbon fines.