gas

I have a Husqvarna mower with an INTEK 540 cc 18.5 hp engine. I changed the oil, oil filter, fuel filter, air filter 2 weeks ago, then ran it for 90 min cutting part of my lawn. Went back a week later to cut the rest and the mower started but blew out clouds of white smoke and spit oil out of...

i have a hustler raptor with a kohler 7000 series engine..in my air filter housing i can smell gas..the filter looks like gas has got on it too..im trying to determine if this is a carb problem which i am thinking it is or something else..the mower runs fine and does not smoke..any help will be...