Sometimes removing a drain plug is the only way to resolve a clog or make a replacement. Most plugs are very easy to remove in a few simple steps.
Step 1 - Prep the Plug
Put the drain in its open position. Run hot water to remove soap residue, so that the wrench can grip properly. Use a rag to dry the entire area.
Step 2 - Unscrew the Plug
Once the plug is dry, close it. Use another rag to dry the top surface of the plug. Put the rag in the palm of your hand and wrap it around the portion of the plug that moves. Twist to the left (counterclockwise) to unscrew the top portion of the plug. If it won't budge, take the pliers and slip them around the edge of the lip. Pull the lip the same way as the rag.
Step 3 - Remove the Bottom Assembly Rod
If the goal is to remove a clog, try using the pliers to pull it out before continuing to disassemble. If you are replacing the entire assembly, or the clog won't budge, then you'll need to remove the bottom assembly rod. Use a plumber's wrench to remove the rod.