18. EVAPORATIVE/EXHAUST EMISSION CONTROL SYSTEM EXHAUST MUFFLER Exhaust Muffler Joint Lock Nut REMOVAL Remove the two exhaust muffler joint lock nuts and two exhaust muffler lock bolts. Remove the exhaust muffler. The temperature of exhaust muffler is very high. Be careful to avoid burns during working. INSPECTION 1. Inspect the exhaust muffler and joint for damage or crack. Replace if necessary. 2. Inspect the exhaust muffler joint packing collar for deformation or damage. Replace if necessary. Exhaust Muffler Lock Bolts INSTALLATION 1. Install the exhaust muffler in the reverse order of removal. A large amount of unburned mixture flowing into the high-heat catalytic converter will burn again and cause damage to the converter due to overheat. Pay attention to the following. Use 92# or 95# nonleaded gasoline only. (Leaded gasoline will cause catalytic converter failure.) During riding, do not turn the ignition switch OFF to avoid a large amount of unburned mixture flowing into the exhaust muffler. Faulty ignition system or fuel system will cause overheat and damage to the catalytic converter. 6