I ran my 1987 300D out of fuel once. After putting in about a gallon of fuel from an "emergency" container (plastic jug) it took about two minutes of total cranking time to get it started again. Not in one session - that would burn out the starter. I did about four 15 second cranks, spaced by about 30 - 40 seconds cooling time for the starter. It helped considerably that the engine was already warmed up. Moral of the story: Don't completely trust the low fuel light to come on.
The situation with the 602/603 is considerably improved over the 616/617 as far as getting restarted after a fuel loss. However, I still would recommend filling up a new main "spin-on" filter with diesel fuel or diesel purge before installation. [ Note - "spin-on" does not mean the filter spins on - it doesnt' in this case, because you turn the bolt instead of the filter. ]
Ken300D