| 摘要 |
PROBLEM TO BE SOLVED: To provide an ignition plug insertion cylinder retaining a structure capable of keeping a state where an ignition plug insertion cylinder penetrating through a cylinder head cover and fitted to a cylinder head, is firmly fitted to the cylinder head.SOLUTION: In a plug insertion cylinder retaining structure (60), a cam shaft bearing portion (66) is composed of a cam shaft bearing body portion (67) integrally mounted on a cylinder head, and a cam shaft bearing cap portion (68) detachably mounted on the cam shaft bearing body portion (67). A flange portion (65) of a plug insertion cylinder (64) is locked on the can shaft bearing cap portion (68) in a state where the cam shaft bearing cap portion (68) of the cam shaft bearing portion (66) is integrally mounted on the cam shaft bearing body portion (67). |
