Bernette b68 AIRLOCK - Machine Settings; Machine Setup and Knife Adjustment

Machine Settings
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2022-05 EN 50400685.00A.04
6 Machine Settings
6.1 Preparing the Machine for Overlock or Overlock/Chainstitch Combo
The machine can be set up for finishing the fabric edge with fabric cut with just a few movements.
Prerequisite:
• The looper cover is opened.
> Set the «Upper Looper On/Off» to the right.
> Adjust the knife according to the stitch settings.
> Knife cover insert is attached.
– The machine is prepared for overlock or overlock/chainstitch combo.
> Perform the sewing start. (see page37)
6.2 Preparing the Machine for Cover- and Chainstitch
For hemming, basting or sewing together without cutting the fabric, the machine can be set up for
coverstitch or chainstitch with just a few movements.
> Set the «Upper Looper On/Off» to the left.
> Adjust the knife according to the stitch settings.
> Coverstitch insert is attached.
– The machine is prepared for a coverstitch or a chainstitch.
> Perform the sewing start. (see page37)
6.3 Setting the Knife
Knife «On/Off»
For a better overview and better access in the sewing area, e.g. for threading, the knife can be lowered (off)
and then engaged again (on). The knife is also lowered if the sewing project already has a clean cut edge
and the edge is only to be finished. The best sewing results are achieved by cutting and finishing in one
single step.
NOTICE
Missing Knife Cover Insert or Coverstitch Insert while Sewing
Injuries caused by the knife or by the looper movement.
Before each sewing, check whether the mounted knife cover insert or the coverstitch insert is attached.
Knife «Off» (to lower)
> Open the threader cover.
> Pull the knife away from the stitch plate as far as possible and then lower it forwards to the lock-in
position.
> Close the threader cover.