What causes Thread Breaks on an embroidery machine

Osman Bayrak

Thread Breaks

Most Common Causes: Incorrect Tension
Damage to the Needle, Rotary Hook, or somewhere else along the thread path.
Time Needed:
Tools: Flat Head Screw Driver


If you are experiencing thread breaks, there are a few diagnostic steps we can go through to narrow down the problem. The first thing you want to do is to determine

if the thread is breaking on all needles, or just one.

Breaking on One Needle: You want to make the pre-tension and main tension

adjustments are correct. In addition, you also want to check for specific damage

to the needle and anywhere else along the thread path. Follow these steps in order:


1. Pre-Tension Adjustment
2. Main Tension Adjustment
3. Damage to the Needle and the thread path

Breaking on Multiple Needles: First, you want to ensure the Bobbin tension is
adjusted correctly. If this does not fix the problem, then you will want to check for
damage to the Rotary Hook. Follow these steps in order:

1. Bobbin Adjustment
2. Damage to the Rotary Hook


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