| 摘要 |
PURPOSE:To effectively utilize a dead space and externally protect a closing valve by providing said closing valve which opens and closes an air vent passage on the side of a transmission case at the back of a transmission case cover. CONSTITUTION:A carburetor is provided over the V bank for the cylinders 601, 602 of an engine 6. The rear part of a crankcase 603 serves as a transmission case 604. A gear box 611 is placed on the rear and side part of the transmission case on the rear of the rear end 612a of a side cover 612, and an outwardly spreading triangular space formed by bevel gears 608, 610 is provided on the rear of the rear end 612a. A closing valve 20 for an air-fuel ratio control device is installed in this space. Thereby, the dead space can be effectively utilized while externally protecting the closing valve. |
