| 摘要 |
PROBLEM TO BE SOLVED: To provide a driving system structure of a power unit for achieving reduction of assembly man hour, miniaturization and weight reduction.SOLUTION: A front cover 53 which covers a front end part 111d of a first main shaft 111 is provided with a main shaft insertion hole 53a, a ball bearing 114 is fixed to the main shaft insertion hole 53a, the front end part 111d of the first main shaft 111 is inserted into the ball bearing 114, the ball bearing 114 is tightened to the first main shaft 111 by a nut 152 which is screwed to the front end part 111d of the first main shaft 111, a clutch shaft member 113 has: a hollow part 111a which extends from the front end part 111d of the first main shaft 111; and a control hydraulic chamber 133 of a clutch 96 which communicates the hollow part 111a, and a hydraulic supply member 156 which transmits hydraulic pressure to the hollow part 111a of the first main shaft 111 is inserted into the main shaft insertion hole 53a of the front cover 53. |
