14.4 Disassemble Main Shaft and Countershaft ................................................................................................. 148 
XV Reduction Gear ................................................................................................................................................... 151 
15.1 Preparatory Data ......................................................................................................................................... 151 
15.2 Fault Diagnosis ........................................................................................................................................... 151 
15.3 Gearshift Mechanism .................................................................................................................................. 152 
15.4 Installation .................................................................................................................................................. 154 
XVI Crankcase ........................................................................................................................................................... 156 
16.1 Preparatory Data ......................................................................................................................................... 156 
16.2 Fault Diagnosis ........................................................................................................................................... 156 
16.3 Crankcase .................................................................................................................................................... 157 
16.4 Crankshaft Connecting Rod Assembly ....................................................................................................... 160 
Exhaust System Inspection and Maintenance ............................................................................................................. 161 
XVII Emission Control System .................................................................................................................................. 162 
17.1 Emission Control System Guarantee .......................................................................................................... 162 
17.2 Periodical Maintenance Instructions ........................................................................................................... 163 
17.3 Emission Control System Mechanical Functions ....................................................................................... 163 
17.4 Solutions to Idle Exhaust Exceeding Specified Value (4-stroke) ................................................................ 164