PICKER DOESN'T PICK UP THE THREAD, CAUSING SHORT TAILS, NO TAILS, AND LONG TAILS AFTER A TRIM:

1. Check the same pages in the technical manual as mentioned above.
2. Thread tensions can aid in this problem also. If thread tensions are too tight Short Tails can be a problem. Make sure the Main Black Knob Tensioners are allowing the silver tension wheel to turn freely. If they aren't, reduce tension by rotating the knob counter-clockwise or to the left about 2 full turns so that the original tension setting isn't affected enough to change the tension drastically
3. Thread tensions that are too loose can cause long tails also. Try tightening the thread tension at the Main Black Knob Tensioners by 2 turns clockwise at a time or to the right.
4. Check the Bobbin Case to make sure that the Bobbin Tension isn't too tight. If the tension is too tight, the top colored thread may sling shot right out of eye of the needle. This will cause a thread break when the machine continues to sew, as the needle will not have thread in it.