The pictures below are applicable to most 8-pushbutton knitting machines.
Inside the pushbutton mechanismShowing which screws go on top
Showing screws around the pattern center
The look of partially disassembled pattern center
Side screws and needlebed screwsShows that the “hole” in the middle is actually supposed to be a “hole”. Screws dont go in there. The image shows a position of the “feet”: wide opening faces the “teeth).