Patent ID: 8202181

Claim:
An engine comprising: an engine case including a lubricant oil chamber; a crankshaft; a drive pulley attached to one end of the crankshaft; a transmission shaft; a driven pulley attached to one end of the transmission shaft substantially parallel to the crankshaft; and a transmission case including a continuously variable transmission adjacent to the engine case, the continuously variable transmission including a V-belt routed around the drive pulley and the driven pulley; wherein the crankshaft is supported for free rotation within the engine case, the one end of the crankshaft defines a projecting portion projecting from the engine case into the transmission case, and the drive pulley is attached to the projecting portion; the drive pulley and the driven pulley are disposed adjacent to each other so as to define a gap between outer circumferences thereof; the V-belt includes a resin belt having a plurality of resin blocks which are brought into contact with the drive pulley and the driven pulley; the lubricant oil chamber includes an extended portion extending from the lubricant oil chamber to below the transmission case so that a space is provided between the lubricant oil chamber and the transmission case; and the extended portion is, as seen in a plan view of the engine, directly under a projected area of the transmission case, and the space is provided between a top surface of the extended portion and an underside of the transmission case.