Bernette b68 AIRLOCK - Needle Thread; Looper Thread

Sewing Start
38
2022-05 EN 50400685.00A.04
Needle Thread
Needle size and thread type must be carefully matched. The correct needle thickness depends on the
selected thread as well as the fabric being used.
• The fabric type determines the thread type and point form.
• The thread type determines the needle size.
Needle sizes of 80/12 -100/16 can be used with this machine.
Thread Type Needle Size
Polyester Overlock Thread No. 120 80 – 100
Polyester Multifilament < No. 120 80 – 90
Wooly nylon 80 – 100
Decorative thread/yarn 80 – 100
Metallic thread 80 – 100
Check the Needle/Thread Combination
The needle/thread combination is correct if the thread is guided perfectly into the long
groove and through the eye of the needle.
The thread can break and cause skipped stitches if there is too much play in the long
groove or eye of the needle.
The thread can break and become jammed if it frays on the edges of the long groove and
is not guided optimally through the eye of the needle.
Looper Thread
A wide variety of thread types can be used as looper thread which can be threaded using the air threader
system.
NOTICE
Damage by Coated or Waxed Threads
Coated or waxed threads may lose some of their coating in the air threader pipes. This results in permanent
blocking of the pipes. A repair by the authorized bernette dealer is required.
> Avoid the use of coated or waxed threads.