Heavy duty sewing machines can give you several years of use, but you have to take the time to care and maintain it properly. Start by purchasing a good cover for your sewing machine. Dust is the enemy of sewing machines. A cover will keep your sewing machine as clean as possible and prevent dust from getting inside. It is best to change your needles regularly. Over time, sewing needles become dull, and this can lead to skipped stitches, looped threads and pulls in the fabric. Eventually, all of that lint build-up from using dull needles will cause issues with your heavy duty sewing machines operation. It’s best to change your needle every eight hours, or after you complete a project. You’ll also want to make sure that you get your sewing machine professionally serviced every year. Be sure to consult your sewing machine’s manual for more detailed and specific care instructions.