| 摘要 |
PURPOSE:To reduce a leakage quantity of cooling air as well as to abate the extent of vibration noise, by extending a gasket of a crankcase and making it contact with a baffle cover. CONSTITUTION:A case cover 8 is attached to the side of a crankcase 5 via a gasket 7, and a cylinder 2 and a cylinder head 3 are covered with a baffle cover 18. And, part of the gasket 7 is extended to some extent and this extension part 7a is made contact with the baffle cover 18. With this constitution, any leakage of cooling air is checked, while any chattering noise is preventable from occurring because the basket has flexibility.
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