| 摘要 |
PROBLEM TO BE SOLVED: To accurately drain water in a case by solving the problem that water flows backwards from a drain hole of the case accommodating an exhaust valve. SOLUTION: In a motorcycle 10, an engine 211 is mounted on a vehicle body frame 110, an exhaust pipe 39 is connected to the engine 211, an exhaust valve 12 to control the flow rate of the exhaust gas is mounted in the exhaust pipe 39, and operation wires 13, 14 for operating the exhaust valve 12 are connected to the exhaust valve 12. A mounting surface 85 of the operation wires 13, 14 is provided in the case 66 of the exhaust valve 12. An inclined surface 86 in which the side opposite to the setting surface 86 is inclined is provided. A drain pipe 87 for drainage is connected to the inclined surface 86. A front end 87a of the drain pipe 87 is along the inclined surface 86. COPYRIGHT: (C)2005,JPO&NCIPI
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