Bernina 740 - Cleaning the Thread Catcher

Care and maintenance
119
> Press the release lever to the left.
> Fold down the fastening bracket along with the black hook race cover.
> Remove the hook.
NOTICE
Dust and thread residues inside the machine
Damage to mechanical and electronic components.
> Use a brush or a soft cloth.
> Do not use compressed air spray.
> Clean the hook race with a brush and a soft cloth. Do not use any sharp objects.
> Hold the hook at the pin in the center with two fingers.
> Guide the hook, lower edge first, at an angle from above behind the hook race cover.
> Position the hook with the two lugs on the hook driver meeting the corresponding openings in the hook;
the colored mark on the hook driver should be visible through the hole in the hook.
> Insert the hook.
– The hook is magnetic and therefore fastened to the correct position.
> Close the hook race cover and the fastening bracket until the release bracket engages.
> As a check, turn the handwheel.
> Insert the bobbin case.
Lubricating the hook
Lubricating the hook can prevent the occurrence of unwanted noises in the hook area. BERNINA
recommends lubricating the hook in the following cases:
• Before using the machine for the first time
• After a longer downtime of the machine
• For intensive use: daily before sewing
• When the message " Lubricate the machine " is displayed
• In case of unwanted noises in the hook area