| 摘要 |
PURPOSE:To make it possible to take-in cooling air in front of cylinders in running so as to cool the cylinders directly without being obstructed by carburetors, etc., by providing an air cleaner and the carburetors in such a manner that they are connected together by intake passages arranged on the lateral sides of the cylinders. CONSTITUTION:An exhaust pipe 11a of front cylinders 4a of an engine 4 is connected to an exhaust port provided in the front portion thereof, and is projected downward obliquely and then extended backward. An exhaust pipe 11b of rear cylinders 4b is connected directly to an exhaust port provided in the rear portion thereof and is extended backward as it is. Carburetors 7 and disposed on both lateral sides of a space formed between the front cylinders 4a and the rear cylinders 4b and are connected to the intake ports of the cylinders through intake pipes, respectively. An air cleaner 9 provided above the rear cylinders 4b and the carburetors 7 are connected to ducts 10 disposed on both lateral sides of the rear cylinders 4b, not in front of them, so that cooling air strikes directly on the rear cylinders 4b. |
