Small Engines (Lawn Mowers, etc.): LAWNBOY 6.5 HP 2O INCH MOWER, engine smoke, smoke check

Question
My mower recently started leaking oil from under the exhaust.  I have not run it in over a month and it is in the garage.  It ran good all summer.  

Answer
Perry

Does the oil smell like gas? Does the engine smoke?Check to see how much oil is in the mower over filing will cause this problem also.Also The rings inside the mower may be getting bad, and if you know what you are doing, you can spend around $50 and buy a new set of rings, and put them in your self.