7. Attach the large gear to the motor, just above shaft base, ensuring one large set
screw is on the flat side of motor shaft. Attach with the two large set screws using the
second smallest (2.5mm) hex wrench.
8. Attach the small Z axis gear on the Z axis assembly’s lead screw, with the top of lead
screw about 1/4in (6mm) beneath the top edge of the gear. Tighten it using the two
smaller set screws and the 2mm hex wrench.
9. (A) Loop one end of the belt around large gear. (B) Loop the other end around the
top of the small Z axis gear. (C) Using the Z axis assembly as leverage, push the bracket
down until it is flat and parallel with the top of the Z axis assembly. This will ensure the
belt is tight.
(A) (B) (C)
Z Axis
Bag C
Z axis
assembly
Z Axis
Bag C
Z Axis
Bag C
9
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