
Maintenance and Cleaning
93
2022-08 EN 5020077.40A.04
11.4 Cleaning the Hook
CAUTION
Electronically Driven Components
Risk of injury near the needle and the hook.
> Raise the presser foot.
> Switch the machine off and disconnect it from the power supply system.
> Remove the presser foot and the needle.
> Remove the stitch plate.
> Clean the bobbin case with the brush.
> Set needle to topmost position.
> Remove the bobbin case.
> Clean the shuttle race with the brush.
> Insert the boobin case.
Note:
The markings of the bobbin case and the stitch plate must be aligned identically.
> Fit the stitch plate.
> Fit the bobbin cover.
> Fit the needle and presser foot.
Summary of Contents for b77
Page 1: ...User Manual...
Page 2: ......