You shut off both valves underneath, remove the pipes to faucet, then remove the two nuts holding faucet to sink. Now pull the faucet up and out. Get new faucet AND two new pipes, SS braided rubber pipe, not the grey plastic junk. Install everything in reverse order. The braided hoses go on as is, no tape or compound, and don't overtighten them. As tight as you can get with a 6" wrench is good.