| 摘要 |
PURPOSE:To prevent a carburetor from sucking water drops or so which crawl along the external surface of an air intake casing downward by preventing said water drops from turning from the external face side onto the internal face side of the peripheral end of a suction air supply opening by means of a flange formed around the periphery of said suction air supply opening. CONSTITUTION:Outside air which is taken into a cowling 15 via an air intake passage 19 is fed from a suction air supply opening 28 of a air intake casing 14 into a carburetor 13 via a suction air supply passage 27. Most of water drops and foreign substances which penetrate into the cowling 15 falls down from the upper part thereof. The rest of them sticks on the external face of the air intake casing 14 and crawl thereon downward. When said water drops and foreign substances reach a flat cylinder part 28A enclosing a suction air supply opening 28 at the lower part of the air intake casing 14, a flange 29 prevents them from turning from the external face side onto the internal face side of the peripheral end of the suction air supply opening 28. |
