Pressure foot
Stop motion screw
Feed dog
Stitch regulator
Sewing to cloth
Firmly to cloth
Moving to cloth
Winding to cloth
Fly wheel
Bobbin winder
Presser foot
Needle
Thread guide
Needle plate
Face plate
Use only sewing machine oil
Check the pressure foot and its presser
Thread tammed in shuttle race
Gummed oil or dirt on bearings