| 摘要 |
An engine for a vehicle includes a crankcase and a starting system having a starting motor arranged above a top wall of the crankcase and a starting gear train. The crankcase is divided into left and right crankcase members. For example the left crankcase member has a first motor mounting portion protruded upward from a top wall thereof, and having a motor mounting hole. The right crankcase member has a second motor mounting portion on a top wall thereof. One end of the starting motor is fitted in the first motor mounting hole and other end of the starting motor is fastened on the second mounting portion by bolts. The starting gear train includes two or more starting idle shafts
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