Brother CS-80 Operation Manual
![Brother CS-80 manual cover](/images/UXkvLHDWSKuBHBVjMtjwvsfa/thumbs/thumb175x175.webp)
To thread the Brother CS-80, raise the presser foot and turn the handwheel towards you to raise the needle. Place the spool on the spool pin, follow the threading path indicated on the machine, and pass the thread through the tension discs, take-up lever, and finally through the needle eye from front to back.
Skipped stitches can be caused by a dull or bent needle. Replace the needle with a new one that is appropriate for your fabric. Also, ensure the needle is inserted correctly and fully into the needle clamp.
Regular maintenance includes cleaning the bobbin case area and feed dogs with a small brush to remove lint and dust. Apply a drop of sewing machine oil to the designated spots in the manual. Always unplug the machine before cleaning.
Loud noises can be due to debris in the bobbin area. Remove the bobbin case, clean out any lint or thread, and reassemble the machine. Ensure all parts are correctly tightened and the needle is not bent.
Adjust the tension by turning the tension dial on the front of the machine. Lower numbers reduce tension (for lighter fabrics), and higher numbers increase tension (for heavier fabrics). Test on scrap fabric to find the correct setting.
Ensure the bobbin is placed correctly in the bobbin winder and that the thread is properly threaded through the guide. Check that the bobbin winder stopper is in the correct position and the machine is set to bobbin winding mode.
For lightweight fabrics, use size 9/11 needles; for medium-weight fabrics, use size 14; and for heavy fabrics, use size 16. Always choose a needle compatible with your fabric type.
To change the presser foot, raise the presser foot lever and press the black button on the back of the presser foot holder to release the foot. Align the new foot with the holder and lower the presser foot lever to snap it into place.
Check if the feed dogs are raised. If not, raise them using the feed dog lever. Ensure the presser foot pressure is appropriate for your fabric, and check for any obstructions in the feed dog area.
Attach the buttonhole foot and select the buttonhole stitch on the machine. Place the button in the buttonholder on the foot, lower the presser foot, and start sewing. The machine will automatically sew the buttonhole to the correct size.