Originally Posted by
true4uca
Cleaned my machine & changed my needle, not sure what I've done. Stitches look ok but if I gently tug on thread it comes out. Seems like my bobbin spins too fast. Have cleaned twice, re-threaded, changed needle still the same. What can I try next.
Well I was so focused on my bobbin but that wasn't the problem. After putting a different colour thread in bobbin I could easily see it's the top thread. It seems to be draging on something. Guess it's time for the repair shop. I'm reallly tempted to take the cover off myself. Just to look is $125+ and may take several weeks& of course no Juki dealer nearby.