Briggs and Stratton 550 self propelled/Poulon Pro.
I changed the oil and the problem persists. I found this webpage: White Smoke From My Engine which said to clean out or just replace the crankcase breather.
Not being familiar with this, I typed it into google images, but still not sure.
There is a metal tube that is attached to my carb with a elbow shaped piece of rubber on one end - it goes horizontal and attaches into this somewhat rectangular part that is located just behind the exhaust on the opposite side of the engine. Is this it?