No the stitch width is under a hinged cover. You can also turn the stitch selector to get various patterns without using cams at all. My machine was new when I got it, and I have oiled and serviced it many a time. When they are in a cabinet you have to remove it from the cabinet to get the bottom off to oil it well, a real pain. I bought a used one just like it and from the looks of it, no one had ever serviced underneath. I managed to get that one clean and sewing well too. By the way, they weigh a ton and must be laid out on the back to get the bottom off.
I hope I made myself more clear.
Ethel