I too purchased a Juki, but then left for vacation right after getting it, so I didn't use it for several weeks. When I pulled it out to use it, it wouldn't do anything. I re-threaded and did everything I could possibly think of and was very worried that something MAJOR was wrong with it. THEN I realized that I was stepping on the wrong end of the foot pedal and I was cutting thread instead of having the machine sew!!! DUH - head smack - LOL