DL.000Characteristics and adjustments “ DL.100-00Characteristics and adjustments DL.100-1Replacement of an engine-gearbox assembly | DL.100-2engine-gearbox assembly DL.112-1head gasket DL.180-1Work on the exhaust system DL.312-1Replacing a clutch unit DL.314-1Work on the clutch control DL.391-00Characteristics and adjustments