When a front cowl and a rear cowl are linked by means of a clip, a large force is applied to a linking part by means of the clip due to the engine vibrating or due to travelling wind. The present invention can link the front cowl and the rear cowl without enlarging the linking part. The side of a fuel tank (9) and an engine (8) are covered by means of a tank cowl (14) linking a front cowl (15) and a rear cowl (16). A flange (26) is provided to the front cowl (15), and the lengthwise direction of a through hole (27) is formed parallel to the cylinder axial line (CL) of a cylinder part (18). Agate (38) provided to the bottom linking end part (37) of the rear cowl (16) overlapping the flange (26) is inserted and is linked by means of a clip (40). The front cowl (15) and the rear cowl (16) are fastened to the vehicle body side by means of a bolt above and below a linking part (14b) by means of the clip (40). As a consequence, the force applied to the linking part (14b) is reduced, and the size of the linking part does not need to be enlarged.