How to Maintain a Bobbin Thread Tension Assembly

Maintaining the sewing machine bobbin thread tension assembly helps ensure that your stitching is accurate and secure. The bobbin controls the lower tension and if not working properly, can cause thread to ball up under the throat plate and needles to break. The following steps will guide you through the procedure for maintaining the bobbin assembly.

Things You'll Need

• Light source
• Clean lint free cloth
• Small brush
• Sewing machine oil

Instructions

1. Unplug the machine and raise the needle to the highest position.

2. Remove the throat plate to view the bobbin assembly. All machines are not exactly alike but have the same principle parts. They are the bobbin that holds the thread, the bobbin case, and in some machines, a removable hook race.

3. Use the small brush to clean the bobbin case and wipe it off with a clean cloth. Be sure to remove all bits of thread and lint. Even a small piece of thread can cause the bobbin to malfunction.

4. Clean inside the bobbin case cavity with a small brush to remove lint and thread. Wipe the area with a clean cloth to remove any oily residue.

5. Refer to your sewing machine manual before oiling any part of the machine. Some newer machines do not require oiling and may be damaged if you do so. Most require a drop of oil on the removable race (hook) mechanism.

6. Ensure that all parts are in their correct position and secure before you thread your machine and continue to sew.

Tips & Warnings

• Keep a cleaning kit for your machine with supplies such as brushes, lint free cloth and sewing machine oil.

• Always unplug your machine before you start any maintenance or cleaning procedure.

• Never use a sharp object to clean the bobbin area. This could cause damage to the machine.