SainSmart Genmitsu 4040-PRO CNC Router User Manual page 14

Step 5: Installing the Z-axis Module
What you will need
Z-axis Module
6
(with Spindle)
1. Unscrew the black collet collar from the spindle and insert the collet at an angle, then push firmly into place while
straightening to seat the ring on the collet into the nut. Make sure the collet is locked in place, then screw the collar back
onto the spindle.
12
12 (4) M5*16mm Bolt
Allen Wrench
13
25
Set (3mm)
ER11 4mm Collet
27
Wrench