Windshield Water - Toyota Corolla 1993

The windshield wiper works for me, but the water drizzle does not come out when I press the button for this purpose, the car has the water container of the windshield wiper, but I do not know that it can be what is not working.
Does anyone have some manual, illustration or something similar to see how to fix it?
Thanks to those who can help me or try.

Friend, the first thing is the first thing you should try the water tank engine, it is very easy to send direct battery with two cables to the motor and see if it sounds, if it does the problem it can be a fuse, or the same telecoming, if you do not do it you replace it and now, now if you press the button and it sounds the engine and the water does not come out, then the handles are covered and nothing else. Luck

Thank you very much, I'm going to try it and I tell you how it went, with people like you, I hope to learn a lot and do not continue to "turn" ...

If the motor sounds to you and the holes are clean look at the tubes, which can be obstruction although it does not usually be very common but everything can be.

Thank you for taking the time to read and obviously for the advice, and of course there is any cause to as you explain.