STEPRACE: Service & Maintenance Manual - rev. 1.2
Page 7.35
7.28. DISASSEMBLING THE SELECTION KNOB
Figure 7.28-1
1. Turn off the machine and unplug the mains
lead from the wall outlet.
2. Back off the 2 dowels a using a 3-mm hex T
wrench.
3. Back off screw a using a 4-mm hex T
wrench.
4. Pull firmly to remove the KNOB from its
pin.
To reassemble the KNOB, carry out the above
steps in reverse order.
To correctly assemble the KNOB, when
the pin is inserted it should be in
position B, and when the pin is released
it should be in position A.