Sewing problems and solutions


Question

Recommendations

Needle thread tension is too low, relax

Readjust the tension

Incorrect hook/hook adjustment

Readjust the position of the rotary shuttle/hook

Broken shuttle tip or hook tip

Grind the shuttle tip/hook tip or replace with a new rotary shuttle/hook.

Needle thread guide element has burrs

Grinding sliding guide element

Insufficient shuttle lubricant

Ensure adequate lubricant supply. Available paper test.

Incorrect needle bar height

Reset needle bar to standard position and check coil formation

Wrong needle model

Change to the correct model

Improper adjustment of adjusting spring

Readjust the adjustment spring