The bobbin thread interlocks with the top thread and shows on the underside of material when you sew. Sewing machines are a mystery to a lot of people, but this website has a great animation that shows how a bobbin works. Be sure the needle is always at it's highest position when inserting the bobbin case into the shuttle. Looking under the fabric, there is tangled thread in the bobbin case. The latch of the case should fit into the notch at the top of the shuttle race inside the machine. The part on the inside is stationary, and the part around the outside rotates and grabs the thread as you sew (aka. Hold the bobbin case by its latch again, then insert it back into the machine. Remove the bobbin case (green marking) from the machine and install the alternate bobbin case (pink marking or no marking) in the machine. If it is incorrectly installed, it will fall out from the shuttle when the machine starts to sew. The Shuttle Race/Shuttle Hook The Shuttle Race is made of 2 parts. 5. CAUTION: Never use a bobbin case that is scratched, otherwise the upper thread may become tangled, the needle may break or sewing performance may suffer. Return the case to the machine. Release the latch after the bobbin case locks in place. Turn off the power, Roll up a towel and place it in back of the machine so you can tip it back for a better view of what you will be doing. 7. Replacing the needle is a common repair and will get you back on track. Insert the bobbin case so that the mark on the bobbin case aligns with the mark on the machine. 6. In case of a machine equipped with Quick-set bobbin (needle plate with a cutter for bobbin thread), lightly hold down a bobbin with your finger and cut the thread with the cutter when installing a bobbin into a bobbin case so that the thread can be inserted through the tension-adjusting spring surely. (I just starting using a machine again so I don't really know the right words, tho I have the directions in front of me.) Put the tabs on the needle plate cover into the needle plate, and then slide the cover back on. There are 2 main parts that I will be talking about today 1. The filled bobbin is then removed and inserted into the bobbin case under the main sewing … I took the shuttle for the bobbin case out of my sewing machine and now when I put it back in the machine it won't stay put. (1) Bobbin case Alternate bobbin case Bobbin center pin. - Make sure the bobbin case finger fits into the notch at the top of the race. Other places that are a source for these common problems are the bobbin area and the threading of the machine. Insert the bobbin case so that the projection on the bobbin case aligns with the spring. If loaded properly, the case should not be able to move around inside the machine. Close the shuttle cover. Make sure that the bobbin case is properly placed back into the machine. 4. 6. the hook). If it is not threaded, put in place correctly, bent, or broken your sewing machine will not work right. 7. Make sure that the indicated points are aligned before installing the bobbin case. Put the bobbin back in the bobbin case. (1) Bobbin center pin. Once you get everything back in place. After starting sewing, a rattling noise is made and sewing cannot continue. The bobbin on a Brother sewing machine is threaded by placing an empty bobbin on top of the machine and winding it there. Use the methylated cloth once more to clean up the region within the sewing machine where the bobbin case is positioned. If the upper thread is incorrectly threaded, the upper thread passed through the fabric cannot be firmly pulled up and the upper thread becomes tangled in the bobbin case, causing a rattling noise. 7. Step 7. - Make sure that you install the needle plate securely. You may then position the bobbin case back in its original position. Set the bobbin center pin. Reinstall the needle plate cover and remove the bobbin cover. The Bobbin Case 2. So I took things apart, and now nothing fits properly!