Hi, i just ran my poloris 335. It ran terrible. 2 weeks ago wss running good. I gound oil in my air box, a lot! 1/2 a quart.
i checked oil. It was full. Over full. Thin and smelt like gas. 2 problems or 1 with 2 symptoms.?

 

Welcome to the forum. It sounds like so much gas is getting in the oil it's blowing through the breather into the air box. I think it's all one problem.