| 摘要 |
There is provided a lubricating structure for an internal combustion engine (2) which has a crankcase (101), a cylinder block (102), a cylinder head (40) housing a valve driving device, and a cam housing (41) provided on an upper portion of the cylinder head (40) to support an intake-side camshaft and an exhaust-side camshaft, the lubricating structure including: a main oil passage (80) formed in the cam housing; an oil passage formed in an outer wall upper portion of the cylinder head (109) so as to communicate with the main oil passage (80) ; and a pipe connection portion (106) formed so as to allow an external oil pipe (108) to be connected to the oil passage from an outside. |
