Will do. ThanksI highly recommend you change the oil and the oil filter. An over filled crankcase is a sign of gas leaking into the crankcase from the carburetor. Gas in the crankcase changes the viscosity of the oil and may result in engine damage if you continue to operate the mower without changing the oil. I know this because it happened to me. It also smoked as you described. My problem was solved with a rebuild of the carburetor. I acted quickly and the engine was not damaged.