Problem in Embroidery Brother's v3 embroidery machine

[Saleem 0]

I have a Brother's V3 embroidery machine which cuts the thread at the beginning of the v3 machine. who can help me to solve this problem. I want to mention that I use the 75/11 needle
120D / 2 thread
on fine fabric with viseline backing. Thanks.

[diver361 4,611]

Check the thread tension. Try embroidering other designs. Maybe this design is very tight. Decrease the embroidery speed and read off the result -350-400 stitches per minute. Clean or replace the bobbin.