| 摘要 |
PROBLEM TO BE SOLVED: To provide an engine capable of sufficiently cooling a friction portion of a centrifugal clutch by oil. SOLUTION: A right side auxiliary crank chamber 67 surrounding the centrifugal clutch 19 is formed in one side part of a crank case 12. An oil chamber 76 in which oil amount for immersing a lower end part of the centrifugal clutch 19 is stored is formed in a lower part inside the right side auxiliary crank chamber 67. COPYRIGHT: (C)2006,JPO&NCIPI
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