Transmitting system for small-sized vehicle

A transmitting system for a small-sized vehicle in which a crankshaft of an engine and an input shaft of a multi-stage transmission disposed in parallel to said crankshaft are connected to each other through a fluid transmitting means including a pump impeller connected to the engine, and a turbine impeller connected to the multi-stage transmission, wherein

• a first reducing device, the fluid transmitting means and a shifting clutch are disposed on said crankshaft of the engine sequentially in the mentioned order from one side wall of a crankcase supporting said crankshaft with a bearing interposed therebetween toward the outside, said shifting clutch having an input member connected to said crankshaft and an output member connected to said pump impeller, said turbine impeller being connected to a driving gear of said primary reducing device, a driven gear of said primary reducing device being connected to said input shaft of the transmission, wherein the axial movements of said input member, said pump impeller and said turbine impeller on said crankshaft are restrained by said bearing and a nut threadedly fitted at a tip end of said crankshaft.