I saw two MS210s on the shelf a while back. One of them had a funky-looking starter cover, so I picked it up and pulled slowly, and it seemed as though nothing was happening. So I picked up the "standard" one and pulled slowly. I could feel the "normal" compressions and was puzzled. So I picked the first one back up and pulled slowly again. No compressions that I could easily pick up on... Another slow pull of nothingness, then all of a sudden, several rapid compressions, the same as if I'd rapidly pulled the "standard" starter.
It immediately brought to mind the starter on the Toro mower my dad had when I was a kid in the '60s. You'd flip out the handle, wind it up tight, fold the handle back over and press down on the knob, which caused the engine to spin all the same as if you'd winded the rope up and gave it a tug (which is what we ended up doing the last several years of the mower after the wind-up starter broke).
This mechanism Stihl is using obviously wouldn't hold up to the rigors of professional use on a pro-"quality" saw, but it's another of their ingenious ideas which is absolutely perfect for the intended audience.
Glen