Walk behind Mower leaks gas after use

[Dan_ZTR]

I have an Ariens walk behind with a Kohler XT 6 engine. It starts easy and runs well but after I stop gas leaks out in the area of the carburetor. I have cleaned the fuel bowl and seat with carb cleaner and blew it out with compressed air. I also replaced the bowl gasket and float needle, yet it still leaks after use.

I take it the gas is leaking out of the float bowl gasket? How much gas leaks out? Does the mower have a fuel shut off valve? I take it gas is gravity feed from the tank. Right?

How long have you had the mower? When did this start?