go on line to the company that sells that brand. Or you should have a diagram just inside your door to the loopers. If not the you should have a color guild loops that the thread goes through.Just follow them with the color on your tension on top . Thread yellow, blue, green, red in that order. Or if all else fails take it to a sewing machine repair shop and have it gone through if it has been that long since you used it. It may need to be oiled and adjusted.