Hi! well, you can try to set up your thread accurately followed this
fig.bobbins se up of thread.the thread should be clockwise rotation coming out to bobbins casing,insert thread on slot to acquired bobbins tension.after setting up you insert your bobbins on shuttle
casing.next set up your upper thread tension.on fig is just the thread knots up under the feed dog on about th - 9cbc7d3.jpgmg src="/uploads/images/9cbc7d3.jpg" alt="9cbc7d3.jpg" /> follow the red thread set, try this on single straight sewing with dial stich set up to # 8 range to #17,Dial tension to # 3. use cotton/polyester foe sample sewing. try on hand maual sewing first several time before applying foot pedal to avoid needle breakage,