IAI America FS - Manual (Page 52)

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17) Attach the slider cover on the other side.
Tighten the fixing screws on the top and side surfaces.
(Use a hexagon wrench with the distance to the opposite side of 1.5mm.)
18) Put the end cover on the opposite side of the motor.
(Use a hexagon wrench with the distance to the opposite side of 2.5mm.)