SeeMeCNC Rostock MAX v2 Assembly Manual page 135

Now you can lift up a little bit on the screwdriver and tighten the screw using a power
screwdriver.
Fig. 9-17: Proper tension position.
If you lift the idler up so that the screw head is in the same location as shown above when you
tighten it, you should have pretty good, but not too much belt tension. DO NOT OVER-TIGHTEN
THE SCREW! IT WILL PULL THROUGH THE MELAMINE AND WILL NO LONGER HOLD
THE IDLER IN PLACE!
Also, do NOT pull down on the screwdriver to lift up the idler. The Melamine section that
you'd be pressing against will split and break if you apply any force to it!
Checkpoint Video #13:
Rostock MAX v2 Assembly Guide
http://youtu.be/Mfvx3JvjzbM
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