3D Systems Cubify Cubex Replacement Manual page 14

Fasten one side of the Y belt by placing it between the Y belt clamps and fastening
the two bolts. Apply equal pressure to each bolt to ensure the X motor mount stays
flat.
Pull the unfastened side of the Y belt through its corresponding clamp, pull it taught
with pliers and fasten the two bolts, again applying equal pressure to each bolt to
ensure the X motor mount stays flat.
Plug the X motor wire into the X motor
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