| 摘要 |
PURPOSE:To easily assemble a valve spring seat, by providing holes in a pitch corresponding to the pitch of a valve guide in a sheet of plate and forming a plurality of the valve spring seats by the single sheet of plate. CONSTITUTION:A sheet of plate 250, providing holes 252 in a pitch corresponding to the pitch of a valve guide provided in a cylinder head, is arranged between a valve seat and a valve spring in a cylinder head. In this way, a valve spring seat, in which a single sheet of the plate 250 serves as the plural spring seats, is easily assembled while prevented from wearing by preventing the seat from simultaneously turning together with the spring. |
