| 摘要 |
<p>The present invention relates to an engine having an engine case (22) on one side of which a V-belt type of continuously variable transmission is provided, said continuously variable transmission (16) being placed in a transmission case (45) and constituted that a V-belt (57) is routed around a drive pulley (55) and a driven pulley (56), said drive pulley being attached to one end of a crankshaft (28), said driven pulley being attached to one end of a transmission shaft parallel to said crankshaft, wherein said crankshaft (28) is supported for free rotation with said engine case, one end of said crankshaft is projected from said engine case into said transmission case (45), said drive pulley is attached to said projected portion, and the drive pulley and the driven pulley are disposed adjacent to each other so as to generate a gap between outer circumferences thereof, and the V-belt (56) is a resin belt comprising a plurality of connected blocks which are formed from a resin at portions thereof which are brought into contact with the drive pulley and the driven pulley being made of a resin member, and a lubricant oil chamber is formed at said engine case and is made to swell out (22b) below said transmission case (45) so that a space (6) is present between said lubricant oil chamber and said transmission case.
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