Patent ID: 8720632

Claim:
A motorcycle comprising: a body frame; an engine unit suspended from the body frame, and including an engine and a stepped automatic transmission; a driving wheel which is driven by the engine unit; a seat attached to the body frame so that at least a portion of the seat is located above the engine unit; and a cover member attached to the body frame, at least a portion of the cover member defining and forming an internal space located between the seat and the engine unit; wherein the engine includes: a crankcase; a crank chamber defined and formed in the crankcase; a crankshaft housed in the crank chamber; and a cylinder body connected to the crankcase, a cylinder provided in the cylinder body, a center axis of the cylinder extending obliquely upward from the crankcase and forwardly; and the stepped automatic transmission includes: a transmission case arranged so that a front portion of the transmission case is adjacent to the crankcase in a vehicle width direction, the transmission case including a front side portion and a rear side portion; a transmission chamber defined and formed in the transmission case; an input shaft arranged in the transmission chamber such that rotation of the crankshaft is transmitted to the input shaft; an output shaft arranged rearward of the input shaft in the transmission chamber, the driving wheel being attached to the output shaft; and a plurality of gear pairs arranged in the transmission chamber to transmit rotation of the input shaft to the output shaft, the plurality of gear pairs differing in a reduction ratio from one another, and the plurality of gear pairs provided in both the front side portion and the rear side portion of the transmission case; wherein an oil reservoir is provided in each of a bottom of the crank chamber and a bottom of a portion of the transmission chamber located in the front portion of the transmission case, oil being supplied to each sliding unit of the engine and to the plurality of gear pairs and being stored in the oil reservoir; a communication path, which communicates the oil reservoir provided in the crankcase with the oil reservoir provided in the transmission case, is located in the crankcase and the transmission case; and the oil reservoir is located in the front side portion of the transmission case but not in the rear side portion of the transmission case.