At Hi Michael, Normally This implies the machine needs to be serviced. If it is an old sewing machine you could decide on if it is value possessing it serviced or if its time simply to purchase a new 1. You can try out a different brand of thread and http://trentonhzlwf.blog5.net/36773098/not-known-details-about-local-riccar-vacuums-in-my-area