How to Wind and Set the Juki Bobbin

The correct bobbin for the Juki Sewing Machine should measure .83 inches in diameter

The inner circle of the bobbin should measure .23 inches in diameter

You can check the size by using a caliper.

Insert thread through the back of the first thread arm hole

Insert thread through the back of the thread guide located above the bobbin tension wheel

Pull thread around the underside of the bobbin tension wheel towards front of machine

**The amount of tension on the thread is very important! The thread should not be loose in the bobbin tensioner but not completely immobile within the tensioner -- you should be able to pull the thread with little effort while still feeling some pressure from the tensioner

Insert end of thread into any outer hole of the bobbin and wrap around bobbin counterclockwise a few times

Push bobbin onto the bobbin winding pin

**Make sure the machine is not threaded and the foot is lifted

Push the bobbin winding mechanism forward, towards the back of the machine, to set the machine into bobbin winding mode

Press on the foot pedal to begin winding the bobbin

Once the bobbin is full, the bobbin winding mechanism will automatically snap back into its resting position - taking the machine out of bobbin winding mode

Cut thread and remove bobbin

Insert bobbin into the bobbin case so the thread pulls towards the left in a counterclockwise direction (C in the diagram)

Pull thread up through the metal slit at the top of the bobbin case (A in the diagram)

Gently pull thread to the left until it clicks underneath the small metal latch above hole (B in the diagram)

Insert the bobbin casing into the bobbin holder underneath the machine

You will know the bobbin casing is correctly inserted once it clicks into place

Check out this guide on how to thread the Juki Sewing Machine