| 摘要 |
PROBLEM TO BE SOLVED: To provide a lubrication structure of a valve gear which maintains proper lubrication performance and enables improvement of the durability.SOLUTION: A lubrication structure 70 of the invention includes: a valve gear 22 including an intake rocker shaft 55 which is supported by a cylinder head 31 forming a cylinder 21 of an engine 4 and an intake rocker arm 57 which is swingably supported by the intake rocker shaft 55 and provided so as to contact with an intake valve 50; a fixing boss 44 which is disposed facing a contact portion 90 between the intake rocker arm 57 and the intake valve 50 and used for assembly of the cylinder 21; an oil passage 71 which is formed in the fixing boss 44; and an injection port 75 which is formed at the fixing boss 44 so as to inject an oil in the oil passage 71 to the contact portion 90. |
