Bernina 740 Manual page 44

Preparation
> Press the bobbin case release at the bobbin case (1).
1
> Remove the boobin case.
> Remove the bobbin from the bobbin case.
> Insert the new bobbin so that the silvery sensor surface is to the back.
> Pull the thread into the slot from the left.
45
036044.50.04_2014-09_Manual_740_EN