Hello! I am looking for an optical description of the components on OM 646. I imagine that all components are named on a picture of the engine compartment. I am a diesel-newer and would need some start-up help. In “Now I help myself” I have such a thing of my M104. Or would that be there in the issue of the W211? Does anyone have these books? As you leave it, this book and “So wirds wirds” shouldn’t be particularly helpful … Thank you!