One simple way to help prolong the life of your sewing machine is to dust your machine out after every project. Dust is really the enemy of sewing machines, and a good brushing under the stitch plate and behind the bobbin case will get those pesky dustballs out before they become a problem. And if you have a rotary bobbin case, you should also add a teensy drop of oil every few hours of sewing.
Tell the truth now – how often do you clean out your sewing machine?
Happy sewing!
Maris