|This tip is for all of us who don't have air threading sergers. Should you break a thread on your serger or simply want to change one of the colors of your threads it is not necessary to tie on or cut and rethread all the threads like all the books and manuals tell you. All that matters is how the threads end up at the end by the presser foot.
Most serger manuals and books say you must thread a serger in this proper order: upper looper, lower looper, right needle, left needle. And manuals show you where the threads should be laying at the end by presser foot. This order is to make sure the lower looper thread is always in front of and over top of upper looper thread and needle threads under and to the left of the presser foot. Pay attention to how your threads lay around the presser foot area next time you thread your serger. Then should you break a thread, simply raise the presser foot, turn tension dial to 0 of broken thread, pull the thread tail off the stitch finger pulling them to the back, cut the formed stitches off so you can slide something under the presser foot to bring up the needle threads and lay off to the left, rethread whatever thread broke making sure looper threads are the way they should be, lower presser foot, turn tension dial back and step on the gas. Easy peasy. No rethreading everything necessary.