Bernette Airlock b64 - Stitch Width and Length Adjustment

Machine settings
48
2020-09 EN 5040064.00A.04
6.5 Setting the Presser Foot Pressure
The Pressure Foot Pressure has been set by the factory so that it is optimal to sew medium-weight
fabrics.Most materials do not require any adjustment of the Presser Foot Pressure. However, there are some
cases where adjustment is necessary, such as when sewing very light or heavy fabrics.
Extra high
High
Medium high
Default value
Medium light
Light
Extra light
> Reduce the Presser Foot Pressure for light fabrics.
> Increase the Presser Foot Pressure for heavy fabrics.
> Perform a sewing test to set the optimal Presser Foot Pressure for your sewing project.
> To increase the Presser Foot Pressure, set the Presser Foot Pressure Wheel to a higher value.
> To reduce the Presser Foot Pressure, set the Presser Foot Pressure Wheel to a lower value.
6.6 Adjusting the stitch width
The stitch width can be set in two different ways.
• Needle position
• Cutting Width
Changing the stitch width via the needle position
The stitch width can vary by the choice of needle position by 2 mm.
> To sew a wide stitch, insert the left needle.
> To sew a narrow stitch, insert right needle.
Changing the stitch width via the Cutting Width
The stitch width can vary by adjusting the knife position. The scale of the Cutting Width Dial determines the
distance between the Left Overlock Needle (LN) and the knife inmm. To the Right Overlock Needle the set
scale value is reduced by 2 mm. This means, at a Cutting Width of 6 mm and with the Right Overlock Needle
inserted, a 4 mm wide stitch is sewn.
> To adjust the stitch width, set the Cutting Width Dial between 5 ─ 7 mm. (see page44)