| 摘要 |
PURPOSE:To enable the supply of oil only when a reduction mechanism is operating, by providing a power transmission member at the down stream side of a clutch for transmitting an engine power to the main shaft of a transmission mechanism and driving thereby an oil pump for feeding oil to the reduction mechanism. CONSTITUTION:An oil pump 16 of trochoid type is fixed to the lower part of a transmission case 2. And a main shaft 4 at the downstream from a clutch mechanism 12 is coupled to an oil pump drive gear 17, and this gear 17 is connected to an oil pump driven gear 18. In this state, when the clutch mechanism 12 has been made 'ON' with an engine operated, a power from the engine is transmitted to the main shaft 4 via a crank shaft 3, a primary drive gear 7, a primary driven gear 10 and the clutch mechanism 12. And the rotation of the main shaft 4 causes the turn of each gear 17 and 18, thereby driving the oil pump 16 and feeding oil to a reduction mechanism via an oil passage 20.
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