1.1 Motor

1.11 crankcase

1.12 crankshaft

1.13 cylinderhead

1.14 chainhousings

1.15 valve train

1.16 cooling

1.17 oil supply

1.18 exhaust

1.191 engine 912

1.192 cooling 912

1.193 oil supply 912

1.194 exhaust 912

1.195 engine br. 912