How to remove Northerly handle?

For Single Handle Pull-Down Kitchen Faucets and Prep Faucets

Turn the water off under the sink (hot and cold supply lines).
Use a hex wrench to unscrew counter-clockwise to loosen the set screw (part #2).
The Hex wrench is 2.5 mm or 1/8".
Pull out the on/off handle (part #1).
Pull out the trim cap (part #3).
Use a pair of adjustable pliers or an adjustable wrench to unscrew counter-clockwise to remove the adjusting ring (part #4).
Hold the stem of the cartridge (#5) and pull it up until it is completely removed from the faucet body.
Reverse these steps to reinstall removed parts or replace parts in place.

For Single Handle Lavatory Faucet

Turn the water off under the sink (hot and cold supply lines).
Remove the plug and use a hex wrench to unscrew counter-clockwise to loosen the set screw (part #1).
The Hex wrench is 2.5 mm or 1/8".
Remove the handle (part #2).
Unscrew counter-clockwise to remove the trim cap (part #3).
Use the adjusting ring wrench (part #5) to unscrew counter-clockwise to remove the adjusting ring (part #4).
Hold the stem of the cartridge (part #6) and pull it up until it is completely removed from the faucet body.
Reverse these steps to reinstall removed parts or replace parts in place.

For Two Handle Lavatory Faucet

Turn the water off under the sink (hot and cold supply lines).
Remove the plug and use a hex wrench to unscrew counter-clockwise to loosen the set screw (part #2).
The Hex wrench is 2.5 mm or 1/8".
Remove the handle assembly (part #1).
Use a pair of adjustable pliers or an adjustable wrench to unscrew counter-clockwise to remove the retainer nut (part #3).
Hold the stem of the cartridge (part #5, hot or cold side) and pull it up until it is completely removed from the faucet body.
Reverse these steps to reinstall removed parts or replace parts in place.
NOTE: When replacing the cartridge, slide the cartridge into the faucet body and rotate the cartridge until the notches on the cartridge line up with the openings in the faucet body.

For Two Handle Roman Tun Faucet

Turn off the main water supply.
Remove the plug (part #1) and use a hex wrench (part #2) to unscrew counter-clockwise to loosen the set screw (part #3).
The Hex wrench is 2.5 mm or 1/8".
Remove the handle (part #4).
Unscrew counter-clockwise to remove the handle trim ring (part #5).
Use a pair of adjustable pliers or an adjustable wrench to unscrew counter-clockwise to remove the cartridge.
Hold the stem of the cartridge and pull it up until it is completely removed from the faucet body.
Reverse these steps to reinstall removed parts or replace parts in place.

For Single Handle Shower Faucet

Turn off the main water supply, or if your shower valve is equipped with stops, turn the stops to the off position.
Remove the plug (part #1) and use a hex wrench to unscrew counter-clockwise to loosen the set screw (part #1).
The Hex wrench is 2.5 mm or 1/8".
Remove the handle (part #2) from cartridge stem.

For further details on how to remove the shower escutcheon plate, please see the article on How to install Gerber shower handle trim escutcheon plate?

For further details on how to remove and replace the cartridge, please see the article on How Do I Install A Ceramic Disc Cartridge For A Single Handle Tub/Shower Faucet?

For Diverter Handle on Escutcheon Plate:

The diverter handle is secured to the escutcheon plate with a C-clip. To remove it, you will need to remove the volume control handle, the handle trim ring and the escutcheon plate from the shower valve first.
Once removed, use two small, flat-bladed screwdrivers to aid in the removal of the C-clip.
On the back of the escutcheon, use one screwdriver blade at one end of the C-clip to keep it from turning and use the other screwdriver blade to push the C-clip end down and out of the groove.
With the C-clip removed, be careful to retain the rubber O-ring and metal washer which were under the C-clip.
Remove the diverter handle and retain the small black plastic washer which is found on the handle.