[. . . ] Slip the thread behind the first guide directly below the tension dial from right to left. Slip the thread behind the next 4 guides (these are indicated by orange dots below the guide). [. . . ] Slip the thread behind the next 4 guides (these are indicated by orange dots below the guide). Next thread the eye of the looper, and then pull the thread towards the back of the serger, leaving approximately 8 inches of thread. Step 3: Threading Lower Looper: (YELLOW) · · · · Slip the thread behind the first guide directly below the tension dial from right to left. Slip thread behind the 4 yellow thread guides (these are indicated by yellow dots below the guide). Slip thread behind the lower looper using the tweezers as shown in photo #2, until the thread slips into the notch located at the far left on the looper. Next thread the eye of the looper, and then pull the thread over the top of the upper (orange) looper and then towards the back of the serger, leaving approximately 8 inches of thread. Photo #1 Lower Looper Threading Continued: Photo #2 Photo #3 Step 4: Threading the Right Needle: (GREEN) · · · · Slip the thread under the first guide directly below the tension dial, and then under the guide just to the left of the first guide. Run the thread over the top thread path indicated by a green dot as shown. When using left needle and upper and lower looper (3-thread) set width adjustment at 4. 5 guideline. When using right needle and upper and lower looper (3-thread) set width adjustment at 3. 5 guideline. When doing a 3-thread rolled hem set at R guideline. Step 7: Threading Tips for the Serger · · · · Use good quality serger thread. Use the same brand of thread in all tensions, do not mix and match brands. Use the same size spools on all cone adapters that are located at the back of the machine when threading your serger. Try to avoid black thread; it tends to cause static, leading to skipped stitches. [. . . ] Use the same brand of thread in all tensions, do not mix and match brands. Use the same size spools on all cone adapters that are located at the back of the machine when threading your serger. [. . . ]