Threading Sergers

I've worked with sergers for many years and have learned a few techniques to make threading them easier. Cut the thread close to the spools which are already attached. Then tie each new strand of thread to the old strand that is hanging, that you have cut off. The next step is either to serger them through or pull each one through seperately. The knot won't go through the small headed needles so you will have to thread them by hand. But a whole lot easier then doing all 4.