Why don't you get your manual out and learn how to change the threads? If it is a 4 thread machine, the sequence is #3 thread, #4 thread, #2 thread then #1. 3 and 4 are the lower loupers, and 2 & 1 are the needles. I use a dental floss guide to thread the lower area, it is a bit tricky, but easy when you use the floss guide. The guide looks like a giant plastic needle with a big eye. You can find them in the toothbrush area of your grocery store. My machine has a guide inside the machine so one can follow it. I have a Bernina 4-thread machine.