How to Thread the bobbin on the Brother LS 2125 Sewing Machine can be found on YouTube.
The shuttle will fall out if the bobbin case is not put back into the machine.When installing a bobbin into a case, make sure it's in the right direction.fig.Check that you don't get resistance when pulling the thread.fig.The bobbin case finger should fit into the notch at the top of the race.fig.A]
The shuttle will fall out if the bobbin case is not put back into the machine.