| 摘要 |
PURPOSE:To relieve the clutch operating force so as to obtain a proper clutch operating feel by releasing the pressure oil in a clutch working oil pressure chamber by the effect of the movement of a clutch lifter plate in the direction as to release the pushing effect a friction plate. CONSTITUTION:Pressure oil which is sent from an oil pump runs through a feed pipe 24, hollow space 1a of a main shaft 1, and a communication passage 25 into an oil pressure chamber 23, forcing a pressure plate 7 to push both an external plate 4 and an internal plate 5 to engage a clutch. On the contrary, for disengagement of the clutch, a clutch lever of a handle is operated to turn a lever 17 counterclockwise. A clutch lever 14 is thereby turned clockwise to push a lifter plate 9 against the reaction force of a clutch spring 31, making a control pin 26 to push a reed valve 27 to open a relief nozzle 7e. The pressure oil in an oil pressure chamber 23 is then discharged via an outlet nozzle 7f. Such operation by keeping the lifter plate 9 to be pushed may fulfill the disengagement of the clutch. |
