I have this machine and I just got the manual out. The Fancy Sititching info is on page #58. But the info on pages #56 & #57 are helpful too.
On page #8 (showing all the parts), part #18, the Stitch Width Control lever, will need to be moved, so your stitches will be wide(r) than a straight stitch.
On page #59, it shows all the fancy stitches and it looks like you need to set the stitch width at #4.
These stitches are not working on my machine; but I have only had it serviced once in 43 years. I will be taking it in sometime soon to get it serviced over. But I did just buy a new Janome 6600 (loving it); and a Singer Featherweight (in hopes of taking some quilting classes.
You have a great machine there ... enjoy it
jody