I popped in to see if anyone addressed fuel in the oil. I will add to Dayze post. If the carb needle and seat sticks it can drain fuel into the cylinder and it leaks by the rings. From there it thins your crankcase oil leading to smoke and can damage the engine quickly. Check the oil change it regardless but I suspect you need to clean the carb.

It's very likely the fuel, ethanol is ****all on small engine seals and gaskets.

You're likely gonna need to carb kit and calibrate, but doubt anything major beyond that is effed up.