Instruction Booklet

Sewing Overlock Stitches on Extra

Heavyweight Fabrics

Lock the upper knife to provide maximum cutting

capability.

1. Hand turn the handwheel to lower the needle bar to

its lowest position.

2. Open the side cover.

3. Use the Allen screwdriver to turn the screw

clockwise until the upper knife cannot be

disengaged.

4. Close the side cover. Sew.

NOTE:

After sewing extra heavyweight fabric, always turn the

screw counterclockwise to unlock upper knife for

normal operation.

NOTE:

Cutting width cannot be adjusted when the upper knife

is locked.