I'm installing a fluidmaster 200ax and lost the installation instructions, can't find them anywhere on the web, I got everything set up, all that is troubling me is adjusting water level, funny the box says "easy water leveling" but I can't find how to make it stop filling.

Did you get the model # wrong. Here are the instructions for a popular fluidmaster product.

http://www.fluidmaster.com/pdfs/400cs_instructions.pdf

Hi Saitam:

Check out this link for fluidmaster 400 (should be similar to your unit):

http://www.fluidmaster.com/pdfs/400ak_instructions.pdf

Look at the picture #26. Here, you will see a CLIP that needs to be squeezed to adjust the height that the float rises. By lowering the clip you will cause the float to raise higher and that will shut the water flow quicker than it is set now. If that fails to fix this, read the instructions and it will show you how to adjust the height of the entire unit. Fine adjustments are doine with the clip or by using a screwdriver at the screw top to adjust the float up or down.

Let me know how you make out... OK?

Mark