Hi everyone ,
I am new on this forum , and i'm asking for you're help . I have some problems with my singer 31-15 , the underneath thread is hanging or i don't know how is possible to tangle in this way . I notice that sometie the hooked thread didn't get over the bobin , and that may be the cause of this , but i need some of your suggestion . i have attached a picture of thread. Sorry for my english.