| 摘要 |
PURPOSE:To provide an engine power transmission device which can reduce gear and chain noises being due to a chain and a sprocket to connect the output shaft of an engine with the input shaft of a speed change gear. CONSTITUTION:An engine 1 and a speed change gear 4 are arranged in a line, and a clutch output shaft 42 and a speed change gear input shaft 10 are received in a chain case 71 on the side of one end part in the direction of the crankshaft of the engine 1 and held there. In this formation, it is premised that the power transmission device of the engine 1 is connected through sprockets 45, 46 and a chain 47 or the like in the chain case 71. Under this premise, the chain case 71 is heightened in rigidity than the other parts between the clutch output shaft 42 and the speed change gear input shaft 10.
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