Lint build-up from heavy quilting.
Use the proper needle type & size for each project.
Use appropriate size thread in needle & bobbin.
Dust inside bobbin case area often!
Change needle often for a better sew.
Use high-quality thread - Aurfil, Mettler, Gutermann or Superior Threads.
Oil your machine with Clear, Stainless sewing machine oil.
It is amazing how much lint, debris and sometimes foreign objects can accumulate deep inside a sewing machine. This added material displaces lubrication and increases friction resulting in mechanical strain.
A yearly Full Service is recommended to keep your sewing machine in a youthful state.
*Please note: Computerized sewing machines are currently limited to Cleaning, Oiling & Mechanical adjustments.
Check Needle Threader & Thread Cutters
Check Bobbin Winders
Check Gears and Motor
Check Electrical Cords & Foot Pedal