• 01 Complete engine, crankcase ventilation, cylinder head, crankcase125
• 03 Crank assembly89
• 05 Engine timing139
• 07 Mixture formation293
• 08 Electric drive, hybrid drive1
• 09 Air intake, turbocharging60
• 13 Air compressor, belt drives48
• 14 Exhaust manifold, engine brake, emission control system34
• 15 Electrical system - engine141
• 18 Engine lubrication, engine oil cooling62
• 20 Engine cooling system97
• 22 Major assembly suspension22
• 30 Throttle control, speed control systems65
• 47 Fuel system, powertrain energy supply58
• 49 Exhaust system, exhaust gas cleaning27