How do you do the lever thing on mythology island?

Answer 1

The four levers are at the four corners of the Aqueduct at the top of the Garden of the Sphinx. You only need to throw each one once (and click on the two wooden channels in the middle). It is easier to see the effect if you start at the upper left lever, then cross right, then down and left, and then right again. In this way, you will see the water filling the channel.

Answer 2

You have to pull all four levers so they can make the water run and you can get the red rose. It will complete the first task on the list that you get from Zeus for

getting the apple.