A3 Sewing Machine
User Guide
Troubleshooting
| Problem | Possible Cause and Solutions |
| The Machine Does Not Start | No Power: Check Power Supply to make sure the machine is plugged in and the socket on the wall is turned on  |
| The Machine Does Not Start | Battery Issue: Make sure the batteries are inserted correctly  |
| The Thread Breaks | Needle Bent or Needle shank is not properly seated: Replace the bent needle and insert it correctly |
| The Thread Breaks | Bobbin Threads and Upper Threads are not put under the presser foot: Put the upper thread and bobbin thread underneath the presser foot |
| Stitches are skipped | Presser’s foot is loose: Set the presser foot lever to down position  |
| Problem | Possible Cause and Solutions |
| The Machine Does Not Start | The foot pedal is not connected: Set the Auto Function switch to Off. Then plug the foot pedal into the foot pedal jack on the machine  |
| The Thread Breaks | Thread tension is wrong for the fabric: Fabric should be no more than 16mm; Use lower tension setting for thicker fabric. Tension Control should be in the right place  |
| The Thread Breaks | Excessive lint in the bobbin case: Clean the lint out of the bobbin case  |
| Stitches are skipped | Incorrect threading: Re-thread the machine correctly. (Refer to Quick Start Guide)  |
| Stitches are skipped | Bent or Damaged needle: Replace the damaged needle  |
| Problem | Possible Cause and Solutions |
| Stitches are skipped | Do not pull the fabric too fast: Do not pull the fabric when the machine is running  |
| Needle Breaks | The bobbin is empty: Re-thread the Bobbin (Refer to Quick Start Guide)  |
| Needle Breaks | The needle is out of Alignment to Realign the needle |
| Needle Breaks | Fabric is too thick or Fabric is not suitable: Make sure the fabric is less than 16mm in thickness; Do not use knitted fabric, velvet, silk, mesh, lace, leather  |
| Problem | Possible Cause and Solutions |
| Stitches are skipped | Wrong needles are used : Refer to the below Needle Size Guide to identify which needle you need. Needle Size Guide: No. 60/8 65/9 – Silks No. 70/10 75/11 – Lightweight Fabrics No. 80/12 – Medium Fabrics No. 90/14 – Medium (slightly heavier) Fabrics No. 100/16 – Heavyweight Fabrics No. 110/18 – Upholstery Fabrics No. 120/20 – Very Heavy Fabrics |
| Needle Breaks | The bobbin case is seated correctly Seat Bobbin case correctly, run it a few times until it is perfectly seated  |
| The machine keeps running when the foot pedal is disengaged | The machine is set to Auto mode. Set the Auto as Off while using a foot pedal |
Scan the QR Code to learn more about your machine!
Scan Me
Documents / Resources
 | A3 Sewing Machine |
References
- User Manualmanual.tools
Published: December 24, 2021
Updated: December 28, 2021