Common Problems

Problem one
Stitches not being formed

Are the bobbins empty - if so replace bobbins.

Is there enough bobbin thread pulled out of the bobbin case - make sure there is at least 3" of thread hanging from the case. 

The needle may not be inserted properly - check needle is in the correct position in needle bar shaft and groove of needle is facing the front.

Is the timing off - re-time machine head.

It could be that the point of the hook is broken - replace entire hook.

Always check the machine is threaded correctly.

Problem two
Thread 'ball up' under throat

Improper threading -  check all thread points and tensions to make sure the machine is threaded correctly.

Is the fabric framed up too loosely - fabric must be framed securely with correct backing paper used.

Are you using the wrong thickness of thread - check the design has been digitised for example in 40 weight thread and the thickness of the thread being used on the machine is the same.

Is the stitch interval too small - increase the stitch interval by 1 or 2 increments. Stitch interval of 3 or larger is recommended for 40's weight rayon thread.

If using a fill stitch on small areas - change to a satin stitch.

Tension problems - check tension top and bottom.

Faulty spring on sensor tension - check spring can bounce freely.

Dull needle - replace.

Needle is too large or wrong type - change to smaller needle (70/75 most preferred) fit correct type of needle for garment used e.g. ball point for soft fabrics sharp point for pvc/leather/nylon.

Problem three
Thread Fraying

Burr on eye of the needle - replace needle 

Is the eye of the needle worn - replace needle especially if previous thread has been polyester or metallic.

Are the thread guides worn or broken - polish guides or replace cover with clear nail polish for a temporary solution.

Is the eye of needle to small for the thread - replace with larger needle.

Tension of bobbin incorrect - check and then adjust.

Top tension too slack - check and adjust.

Burr on hook - can be buffed with emery cloth. 

Problem four
Thread Breaks

The flow of the top thread is obstructed - check that the thread is not caught on tensions, or under thread cop/cone, if so try thread holders.

The running of the machine too fast for the design or part of the design - reduce speed accordingly.

Burr on bobbin case - buff with emery cloth.

Burr or excess wear on hook - if the hook is not repairable replace it.

Scratches, needle marks or burrs on throat plate - check the plate top, hole and bottom, polish with emery cloth until it is smooth.

Tension of bobbin incorrect - check and adjust.

Top tension too tight - check and adjust.

Problem five
Machine stops - no thread breaks

Sewing head turned off - always check if head switched off, thread break indicator must also be switched off.

Improper threading - make sure the machine is threaded correctly through all tensions.

Faulty check/sensor spring - make sure spring is able to bounce freely, if problem continues replace it.

Faulty on/off switch - call engineer.

Faulty boards - call engineer.

Problem six
Needle Breaks

Needle inserted improperly - make sure needle is in correct position and inserted all the way into needle bar shaft, check position of groove make sure it is facing the correct way. Make sure needle bar screw is tight.

Flow of thread is obstructed - make sure thread is running freely through all tensions check all tensions check all threading points, base of cop/cone. 

Needle too close to hook - hook may need to be retimed.

Needle hitting frame - check correct size of frame being used for design.

Wrong type of needle being used - check correct needle is being used for garment e.g. If having problems with baseball caps may need to use sharp point or standard point needles.

Problem seven
Fabric Puckering

Garment framed too loosely - reframe garment making sure it is tight.

No backing - add correct backing to garment while framing.

Improper use of backing - backing should be framed along with garment for stability, if you require more stability try a fusible or adhesive backing.

Improper tensions - increase the stitch interval by 1 or 2 increments.

Problem eight
Machine Stops While Sewing

Lack of lubrication - oil machine daily, always check users manual as machine types may differ.

Excess threads caught behind hooks resulting from numerous "thread balls" or a needle point lodged in hook area from broken needle - make sure needles in "up" position, remove throat plate check area is clean and free from threads. If problem persists check user manual, may need engineer.  

Problem nine
No power when machine is turned on

Check all power points, pantograph may be outside sewing limits - manually move pantograph while machine is switched off.

Problem ten
Thread break detectors not working

Thread break indicator is not switched on - make sure sensors are switched on.

Improper threading - make sure machine is threaded correctly through all tensions, especially tension with spring and sensor.

Faulty sensor spring - check spring is bouncing freely, check spring is not bent, if so replace.

Contact area dirty - clean the area between the spring and the brass sensor button.

Problem eleven
Start key will not activate sewing process

Improper programming - make sure all questions have been answered in programming sequence.