A steering post has a post end part positioned at an upper end on the front surface of the steering post. A case section has a case end part positioned at a lower end on the front surface of the case section. A gap is provided between the post end part and the case end part. A cover member is disposed to cover the gap. The cover member has a shape that is curved to not intersect a locus of the case end part when the case section is tilted with respect to the steering post. A lower end part of the cover member is connected to the post end part. An upper end part of the cover member is disposed above the case end part inside the case section.