Water does not completely divert from spigot to shower head.

[matapus]

I have a shower with 3 knobs. one hot, one cold, and a center one for shower or tub. when you turn the knob for the shower, the water keeps coming out of the spigot. how do you adjust this? thanks.

[master plumber mark]

That is a Sayco faucet...



what you hav ein your hand is either a hot or cold stem..

for the center stem in the sayco faucet you need a special
diverter stem...


you can put in a new diverter stem in the center
and it might make it do a better job...



but it is normal for some to come out of the spout all
the time

[Verdeboy]

You can also try to rebuild the diverter stem by replacing the worn-out bibb washer, o-rings, and any other seals. I also like to add a bit of plumber's grease to the inside threads.

[jimbo]

http://images.hardwareandtools.com/P/u142847.jpg
Your middle ( diverter stem ) probably looks like this. Get a new one.

TIP: When removing or reinstalling any of these shower stems ( hot/cold/diverter) make sure the stem is turned to midway bewteen open/close positions.