Step Checking and testing Step Faucet installation 1. Turn the faucet handle all the way on, turn-on headstand cold water supply and flush water lines forgone minute. 1.Assemble the screw 1o faucet, position the faucet, base and o-ring on the installation surface. 2.Check all connections at arrows for leaks, re-lighten it if necessary. 2.Assemble the thread shank, plastic washer and metal washer to faucet.