| 摘要 |
An exhaust outlet 34 is formed at the center of a rear end wall 46 of a tail cap 21 closing a rear end opening of a muffler body 20, and a tail pipe 30 is connected at its rear end to the exhaust outlet 34. The exhaust outlet 34 is formed through a tail pipe supporting member 35 mounted on the rear end wall 46. The tail pipe supporting member 35 is formed with an annular mud guiding groove 37 opening rearward around the exhaust outlet 34. The mud accumulated on the rear end wall 46 is guided into the mud guiding groove 37 and moved in the mud guiding groove 37 owing to its capillarity. Accordingly, the mud can be moved down along the mud guiding groove 37 and smoothly dropped to the ground, thus preventing the clogging of the exhaust outlet 34 with the mud on the rear end wall 46. |
