Today, we will teach you how to install the bobbin case on the machine.
Look here, before we start, we should prepare 2 things: bobbin and bobbin case.
Check if the bottom thread is tight, if you can't press it with your fingernail it means you are winding the thread correctly.

Step 1 Put the bobbin inside the bobbin case
Step 2 Pay attention to the crevice, the bottom thread should cross to the crevice.
Step 3 Use the thread hook the slit
Step 4 Then , find this part: spiral-shaped section, rotate clockwise 2 circles.
Step 5 There is only one question: How to make sure you install the bobbin case into the rotary hook correctly ? We just install the bobbin case into the machine, when you hear the voice, it means you installed it correct.
Here is also a instructional video for your reference




