| 摘要 |
In a power unit for a motorcycle that includes an internal combustion engine having a crankcase rotatably supporting a crankshaft with an axis located on a split face between an upper case half body and a lower case half body and a continuously variable transmission having a belt, while it is enabled to use two types of respective different oils for an internal combustion engine and for a continuously variable transmission, the rigidity of the crankcase is enhanced. A crankcase is provided with a partition wall that separates between a crank chamber housing a crankshaft and a continuously variable transmission chamber housing a continuously variable transmission. An axial line of the crankshaft and respective axial lines of the drive pulley and the driven pulley are each located at a corresponding one of apexes of an imaginary triangle VT1 on a view projected on a plane perpendicular to the axial line of the crankshaft. An axial line of a downside-located pulley, of the respective axial lines of the drive pulley and the driven pulley, is located on the split face.
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