It is easy to replace the insides of an outdoor water faucet if you have the tools. To do this, first shut off the main water supply and then open then faucet wide. Then remove the retainer nut and unscrew the packing nut. Replace the packing nut with graphite compound then replace the packing nut and tighten it. Read more on how to replace the insides on http://www.ehow.com/how_5541429_replace-broken-outdoor-hose-faucet.html.