I still have my ME Super i purchased last century...I even use it from time to time...thought not much since I finally purchased a K-30.
Once you spool your film and close the back, snap the shutter, but keep an eye on the winder knob on the left. If it doesn't rotate, the film has not likely taken hold on the winder. It should rotate each time you activate the shutter. Usually two snaps is fine, three for sure. Also, I developed the habit of gently winding the left winder knob to "tighten" the film gently, but firmly. It may be a wives tale, but when I learned this, the rationale was that by doing so, it assures that the film is properly positioned for a flat exposure.
Bottom line is that you can start out with two cranks, if it works, great. If not, three should do the trick.
PS. I just pulled out my ME Super.
I closed the back, snapped the shutter, and on the second, my counter was zero. On the third, it moved to 1.
So the official answer is "3".
Just like the owl answering the age old question, "how many licks does it take to get to the center of a tootsie pop?"