While you wait for answers, we may have found some information which could help you.
Click here for Wheel Correct InnerKenmore 158.14001 Stitch length knob now turns, won't change length?
How do I troubleshoot a Kenmore sewing machine 1972 zig zag?
What size motor does this model have 158.14300 ?
Kenmore 158.12511 stopped sewing?
Kenmore sewing machine #15814300?
How do I resync a385.16221300 the needle hits the bottom plate ?