G01 - Crankcase Assembly
G02 - Crank Shaft Assembly
G03 - Cylinder and Piston Assembly
G04 - Cylinder Head Assembly
G05 - Timing System
G06 - Lubrication System
G07 - Water Pump
G08 - Cooling System
G09 - Clutch Assembly (B4 989 R)
G10 - Change Gear Assembly
G11 - Gear Selector
G12 - Fuel Pump Assembly
G13 - Fuel System
G14 - Starting System
G15 - Engine Electric System
G16 - Exhaust System
G17 - Clutch System (B4 1078 RR)
