Shortly after threading the machine with a new spool of thread, I began to hear a new noise coming from the machine. After I heard it for the fifth time, I stopped sewing. It sounded like metal hitting something. I pulled out my sewing machine manual to see if I could determine where the sound was coming from.
The manual stated that the machine needs to be "oiled frequently," but what constitutes frequently. My gut was telling me that I needed to oil Beulah (my machine). That's exactly what I did and she sounded beautiful again.
The thing I learned was that my machine"Beulah" needs to be cleaned and oiled every time 1 oz or 250 yards of thread is used. This is how frequent my LSZ-1 Ultrafeed needs to be cleaned and oiled.