To provide the crankcase cover of a light vehicular engine.

A crankcase cover 33 is constituted by a metal bearing holder 52 and a synthetic resin made cover main body 53. One end of the drive shaft 25 of a V belt type continuously variable transmission 14 is supported turnably through a bearing 51 by a bearing holder 52. The cover main body 53 18 formed so as to cover the entire V belt type continuously variable transmission 14 and fixed to a crank case half part 12 in a state covering the bearing holder 52 from a car body outside.