Acquired a B2150 that has been sitting outside with the top of the muffler rusted off. I removed the exhaust assembly and blew the water out of the exhaust ports, then decided to check the coolant, none visible, added several gallons of water, none coming out ex ports. Checked the oil dipstick, way overfull !!!!! Previously the oil was just touching the dipstick. Tomorrow I will proceed to remove the cylinder head for further inspection. Any advice is greatly appreciated.