| 摘要 |
PROBLEM TO BE SOLVED: To avoid block of a connection between a cylinder head cover and a breather pipe due to freezing while ensuring the vibration isolation performance of the breather pipe.SOLUTION: A breather hole 72 whose inner diameter D1 larger than an outer diameter D2 of a breather pipe 66 and which opens in a valve chamber 17 is formed on an engine body 10. While one end of the breather pipe 66 is inserted into the breather hole 72 with a clearance C in the radial direction, the breather pipe 66 and the engine body 10 are connected by a cylindrical rubber elastic member 74. |
