Janome MB-4 - Manual (Page 80)

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SECTION 5. CARE AND MAINTENANCE
Cleaning the Hook
CAUTION:
Turn the power switch off before cleaning the hook
area.
Open the hook cover and remove the bobbin case.
Clean the inside of the hook with the lint brush.
q Hook cover
w Lint brush
Cleaning the Bobbin Case
Remove the bobbin from the bobbin case.
Clean the inside of the bobbin case with the lint brush.
Insert a corner of a piece of paper under the tension
blade and scrape out lints.
Clean the outside of the bobbin case and the opening
with lint brush.
q Piece of paper
w Tension blade
e Opening
q
w
q
w
e