The engine oil drain is the 17 mm bolt head on the left side of the engine case as rearward as you can get and still be engine case. The BLACK 17 mm "bolt head" just forward of the oil drain is the strainer screen made of plastic/composite. The filter is on the right side of the engine case, rearward and takes a 15/16" socket or the mm equivalent. Get your wrenches and get busy. Call me in the morning!
Karl