How do you use the rib combs on a Singer Big 9 knitting machine?

To use the rib combs on a Singer Big 9 knitting machine, first, ensure that your machine is set up for ribbing. Attach the rib combs to the stitches on the front bed, aligning them properly to hold the stitches securely. Then, adjust the tension and use the machine's ribbing mechanism to create the desired rib pattern as you knit. Finally, check the fabric regularly to ensure even tension and stitch formation.