21. Use a M6 kunrled knob bolt to hold on
the stuffing pump, screw on the 2 screws
evenly, then push the base plate out to
separate with the stuffing pump. Do not
hurt the other parts during separation.
22. Use a M8 knurled knob bolt to remove the
axis of stuffing pump.
23. Use 2 pcs of M6 knurled knob bolt to
remove the copper bushing.
* Do not scrub the parts with black
coating.