Just got my 1983 280SE back from the shop after major service (I have had the car two weeks) and notice the idle speed is a little low: ie. it stalls nearly everytime you come to a complete halt unless you leave your foot on the throttle.

Is it easy to bump up the idle speed by a 50 - 100 rpm (that's all it needs to idle smoothly and not stall) or should I really run it back to the shop for them to look at again?

This is my first MB and, while I was quite happy adjusting SUs on old Rover V8s, I have never fiddled with a fuel injected car before.