How to Repair a Dripping Single-Handled Faucet

The first task in any faucet repair is to shut off the water feed by closing the valves under the sink; if there are none, Richard shuts the water main. He turns on the faucet to bleed the pipes of water, then plugs the sink’s drain with a rag. "The smaller the part," says Richard, "the more it wants to take a dive down the drain."