It's interesting that there are at least 10 tubes for the injection pump to pump fuel into. I would guess for an 8 cylinder engine you would need the 8 for the cylinders, 1 for the cold start valve, and 1 for a return line. Note all the interesting tools hanging on the walls!
Doug - it looks like Hans is possibly near retirement. Were there any youthful apprentices there?
Rodd
Powell, Ohio, USA
1966 230SL, Euro, Auto, Leather, both tops
1994 E420