| 1. A collar 14. |
| 2. To weaken a nut 15 and a bolt of 17 fastenings of a coupling tape of the back muffler. |
| 3. To pull for the back muffler and to separate it with an intermediate exhaust pipe. |
| 4. A bolt and a nut of a coupling tape. |
| 5. The back muffler with an exhaust pipe. |