This is a newer model Kenmore 158. I don't think I like it. It is not as easy to thread as the older models. The width control is inside the top and the presser bar pressure regulator is inside the needle bar area. Inconvenient. Sleek looking, true, but inconvenient.
I kept moving the tension wheel, thinking it was the stitch width control.
I thought I was so smart. I did not lose that spring (red arrow). I carefully snapped this photo and marked the handwheel with a piece of tape to indicate where that screw belongs. The blue arrows are pointing to three very important items.
I would love to tell you about what happened after I removed that screw. But that is another story....one that involves a moron (me). I will save it for another day. Wrigley is lying down upside down next to me, Wilson is snoring across the room and I can barely keep my eyes open....Just wait though. It is an amazing story about ball bearings. Little ones. The ones behind those blue arrows.