OVERLOCKSTITCHESEXPRESS423-thread Rolled Wave Stitch1. Move the Wave Selector lever from "O" to "W".2. Cut the threads from the thread cones and remove from the thread paths.3. Lock the machine for threading the loopers (See page 19.)4. Place the right needle thread cone on the OVERLOCK NEEDLE 2 spool pin.5. Slip the right needle thread into the telescopic thread guide directly above the thread. Follow the leftoverlock needle threading path down to the right overlock needle.6. Thread the O-2 needle using the needle threader. (See page 24.)7. Place the upper looper thread cone on the upper looper spool pin.8. Slip the upper looper thread into the telescopic thread guide directly above the thread. Follow the topthreading path for the right overlock needle thread, down the front threading path, to the left of thechrome thread guide, and directly to the "U" jet air threading port for the upper looper. Set the LooperThreader Selector on "U". Thread the upper looper. (See page 20.)9. Place the needle thread and upper looper thread under the presser foot and to the back.10. Place the lower looper thread cone on the lower looper spool pin.11. Slip the lower looper thread into the telescopic thread guide directly above the thread, then slip thethread into the chain looper telescopic thread guide to avoid the thread getting tangled while sewing.Take the thread through the standard lower looper threading path to the "L" jet air threading port for thelower looper. Set the Looper Threader Selector on "L". Thread the lower looper. (See page 20.)12. Set Stitch Selector on "C" for Rolled Wave Stitch.13. Set Stitch Length and Stitch Width following the illustration below.NEEDLESO-2LENGTH1.0-1.5RWIDTH3.0-5.0STITCHSELECTORCWAVESELECTORW