Always have the presser foot in the UP position when threading the machine. This opens the tension disc to allow the thread to nestle inside the assembly.
Make sure the thread passes through the take up lever
Make sure you inserted the thread in every thread guide
I always recommend a sharp needle. You may not notice any slight bends, burrs or dullness in the needle which would throw off the timing and the stitch quality.
SPOOL CAP - If you have a horizontal spool pin a spool cap is very important. Its also very important the spool cap covers the end of the spool of thread but make sure its not too big or it will throw off the thread tension.
TOP TENSION DIAL - The setting should be between 3 and 5 on most machines.
The best way to know if you threaded the tension assembly correctly is to put the presser foot in the DOWN position. Now take the thread from the right of the tension assembly and pull. Is there tension on the thread or does it pull out very easily? If it pulls out easily you threaded it incorrectly. Try it again
also check under the needle plate for lint
and in the bobbin case area for lint or loose threads
271 questions posted
Usually answered in minutes!
764 Questions
337 Questions
294 Questions
181 Questions
150 Questions