Replace Bad Gears
Mechanical sewing machines use gears and levers to produce stitches, but often gears wear out or break off teeth. Solution: replace bad gears (always in sets). Sounds easy. It is if your remember that when you move the gears, their shafts, and their associated parts; all the settings must be reset properly. Learn all brand sewing machine repair at www.SewingMachinesInstitute.com.