Small Engine Troubleshooting Problems? Ask a Mechanic Now.
Flooding has to be caused by too much fuel. Has mower been in storage or is this the first start of the season? Have you checked the carburetor float bowl for any debris or if the float and needle valve are closing off the gas from the fule pump?
Here is a link to a Nikki Carburetor on a Briggs. I know your's is Kawaski, but should be same carb type.