The lever on a faucet controls what?
Flow; it's just a valve.
The simple machines in a faucet are: # A wheel and axle. # A lever (the handle). # Gears (probably inside the faucet). I'm pretty sure these simple machines are in a faucet, but I'm not sure if there are others. I've never looked into a faucet before...so, no experience. Thanks for reading my answer!
Turn off the faucet twisting in a clockwise direction. Use a wrench to undo the set screw on the pop-up drain bracket located at the base of the faucet. Remove the pop-up drain lever from the faucet and keep aside. Unscrew the remaining nuts underneath the faucet with the wrench. Remove completely from the top of the sink.
The part the water pours out of, usually activated by a lever in houses (perhaps one for cold water, one for warm water) and sometimes in public bathrooms. However, it is common for restaurants to have automatic hand sensors that generate the faucet. Otherwise, you could look "faucet" up in a dictionary.