Just because an older toilet is leaking does not mean that replacement is required. A malfunctioning fill valve may be causing the leak and this component can be replaced. This project does not require much time or money. With the new fill valve in place, water and cash will be saved.
You will need:
Step 1: Remove the lid from the toilet tank. Shut off the water supply to the toilet by turning the water shut-off valve in the wall clockwise.
Step 2: Drain as much water as possible out of the toilet tank. Do this by holding down the flushing lever until the toilet has completely flushed.
Step 3: Use the sponge and towel to remove any water that remains in the toilet tank. If there is a large amount of water, a shop vacuum can also be used.
Step 4: Use the channel-locking pliers to disconnect the toilet water supply tube or the hose connecting the fill valve to the water supply valve.
Step 5: Go under the toilet tank, find the lock nut that secures the fill valve to the toilet tank, and loosen it with the channel-locking pliers.
Step 6: Remove the current fill valve from inside the toilet tank, noting how it is attached.
Step 7: Install the new fill valve in a similar manner, following the manufacturer-provided instructions.
Step 8: Attach the fill valve and adjust its float to the manufacturer-recommended height, using the tape measure.
Step 9: Attach the new tank refill tube to the overflow pipe.
Step 10: Reattach the water supply hose or tube to the toilet tank, using the channel-locking pliers. Be careful not to overtighten because this could cause damage.
Step 11: Turn on the toilet water supply and test the new fill valve by flushing the toilet. Fix any leaks and put the lid back on the toilet tank.