Common Sewing Machine Problems and Simple Solutions You Can Fix Many Sewing / Stitching Problems!You can fix Common Sewing Machine Problems Yourself. Problems like improper threading, machine or thread jams, tension issues and thread breaking are easy to fix. After working with Student machines for many years, I’ve become fairly good at working on machines even though, I don’t have the actual skill to repair something. If it is a threading, tension, or bobbin problem, I can generally fix that. Here are some ideas to try if you are having sewing machine problems and your machine is not working properly for you. Check your Machine Operating Manual for proper threading of top thread and bobbin when you have sewing machine problems. Improper threading is probably the number one problem of poor stitch quality. Check this before you do anything else! If you no longer can find your operator’s manual, I am 99.99% sure, you could google your sewing machine make/model and find the entire operator’s manual and print it out. At least you’ll find the proper threading directions /images for your machine if you feel you may not be threading the top or bobbin correctly.