[header] How to remove a tub faucet [title] Look on the underside of the faucet to locate the screw. [step] Slip-on spouts will have a set screw under the spout, near the tub wall. The set screw secures the spout onto the water supply pipe. 
Feel and look at the faucet for a screw hole on the underside of it. If there is no screw under your faucet, you probably have a screw-on faucet.