| 摘要 |
A vehicular transmission for an internal combustion engine includes lead grooves disposed on an outer periphery of a shift drum have communication portions connecting a pair of gear train establishment portions extending circumferentially along the shift drum. The communication portions include half neutral portions formed at a center thereof, extending circumferentially along the shift drum. The resulting configuration suppresses an engagement noise to a minimum during changing of a gear position through a sliding motion of a shifter.
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