IAI America RCA2-SD4N - Manual (Page 67)

8. Installation
59
8) Confirm that the bracket moves smoothly in the whole range of its stroke. Readjust the position
if it is confirmed the bracket gets heavy or stuck at any point in the stroke range. (For the low
lead types (Lead 1 and 2), twist the rotation shaft with a screwdriver to move the bracket.)
Recommended screwdriver size:
Nominal size 5.5 to 6.0 (width at tip)
Caution : Do not attempt to move back and forth from the load side (rod side) for the low lead
types (Lead 1 and 2).
Moving it forcefully would apply too much load to the feed screw and may result in
the cause of operational failure or destruction of the product.