In a motorcycle, an increase in the wedge effect of the upper cowl occurs with respect to the wind buffeted thereto during travel for reducing wind drag while maintaining continuity of the upper surface of the screen with respect to the upper surface of the head of the rider in a fully bent posture while providing a meter with high visibility even for the rider in a fully bent posture. The FP includes a FP well of a second polarity type and first and second FP contact regions. 1oct-3-yl}amide or a solvate thereof. Hence, when the check valve assembly is opened for inspection, by removing the lid assembly, the poppet is removed along with the lid assembly, to allow for easy inspection of the poppet.