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CHECK THESE FIRST::
MAKE SURE NEEDLE IS INSERTED THE RIGHT DIRECTION. LOOK AT YOUR INSTRUCTION BOOK.
MAKE SURE INSERTED IS TOTALLY INSERTED.
CHECK TO SEE IF THE BOBBIN THREAD IS STUCK. ALSO, ENOUGH LENGTH OF BOBBIN LENGTH EXTENDED TO ALLOW THE NEEDLE TO PULL IT UPWARDS.
MAKE SURE THE BOBBIN THREAD IS INSERTED THE RIGHT DIRECTION AND SET WITH CORRECT TENSION.
CHECK TOP NEEDLE TENSION TO INSURE THERE IS TENSION ENOUGH TO PULL THE BOBBIN THREAD ABOVE THE THROAT.
IF THESE DON'T WORK YOU MAY NEED TO GO TO YOUR LOCAL REPLAIRMAN.
Take a deep breath, count to 10... then slowly let it out. Ok. now. Most industrial machines are basic mechanical machines. Not much to go wrong with them. But they are so basic the manufacturers figure you would almost automatically know how to thread and adjust them.
There are a few things you can check.
I assume you got the needles when you got the machine. Did you know that some machines require left or right twist on the thread? Yes, I know... "Huh?" So first lets make sure your needle and thread match well.
Cut off a length of thread abotu 18 inches long. Take out your needle and thread the eye of the needle. Now hold one end of the thread up... does the needle slowly go down the thread? If it goes fast the eye is too big for the thread. If it slips and stops... the eye is too small for the thread. In either case you need different needles for this thread.
Next, In your instruction book... really study those pictures. Almost all machines require that the bobbin be inserted with the thread unspooling off the bobbin in a certain direction. Insert it wrong and it does strange things with tension and your loop.
Next... make sure you have threaded it correctly. This means lifting the presser foot lever while threading... make sure you are in between those tension discs. (I've had a machine that required that I wrap it 1.5 times around a tension disk... so make sure you are really studying those diagrams.)
Remember. Loops on bottom of material mean top tension is too loose. Loops on top of material means top tension is too tight and perhaps the bobbin tension needs adjusted (loosen top tension first!)
I hope you got the servo motor instead of the clutch motor.
Is the needle bent, burred or blunt, did it strike a pin or the sewing machine foot during the jam up?
Hand wind the machine through the stitch formation and listen for any squeaking or popping sound as the needle enters the fabric. Or just change the needle anyway and see if it helps. A needle is good for 4-6 hours of sewing only so they do need changing for each new project.
If the stitching is looking uneven and tension is bad check your thread path and make sure the top thread is between the tension discs correctly and under tension, the tension dial is set to the mid range 5 or so and that the bobbin thread is correctly held by the tension spring and is in the right way and rotating in the correct direction.
If looping on the underneath, then your top tension is off, and visa versa.
Hi, you have to set the timing for your top looper. Mechanical aptitude is required to set the timing since its a very sensitive and critical. I can probably help you look for me at www.sewingmachineryrepair.com
You did not mention the type of fabric that you are having trouble with. For instance, stretchy fabric may require a slightly different approach. I'll assume that you are using a medium weight woven material.
First of all, ensure that you are using good quality cone thread, such as Maxi-Lock and that your needle(s) are new or in good shape.
Secondly, make sure that each thread is pulled fully into its tensioner, BETWEEN the discs and not behind them or riding on top of them. Grasp the thread from both sides of the tension and pull it through like dental floss.
Test sew if one or more threads was not in the tensioner. If still not good, proceed with the next step.
If you have your instruction manual, look at the page which tells you how to set it up for normal tension. If you don't have a manual, call 1-440-808-6550 and they will send you a free PDF of the manual.
NOTE: Most White 532 tension dials rotate TWO full turns around, so you don't know if you are at 5 or 15.
Turn all of the tension dials to zero, each one should have no tension. Then set the tensions as follows:
Left needle: 7 Right needle: 3 Upper looper: 3 Lower looper: 3
Unthread your machine and set the tension to 4.5. rethread your machine up to the needle and then put the presser foot down. If the thread pulls hard, your machine is threaded right if it pulls easily, the thread is not thru the tension wheel correctly.
Rule of thumb:: loops on the top, problem on the bottom.
loops on the bottom, problem on the top.
Sounds like your needle threads are not tight enough.
Do some samples using different colored threads, if necessary, to see which needle thread is not doing the job. Then tighten in increments till you get the right tension settings.
It helps if you make notes of the correct settings on that material for the next time. Start a sample notebook, for the different materials you might use with tension settings for each, and if you do any fancy stuff with your serger, like pintucking, puffing, elastic application, ruffling and such.
all machines thread the same. TTN tension,take up,needle.
Beginning with the spool, guide the
thread through the thread guides to the tension assembly. Pull the thread
through the tension assembly and test it to make sure the tension is working
(To do this test, adjust your tension setting to normal or medium or 5 or
something in the middle. Raise the presser foot and pull the thread through the
tension. It should pull easily!! Lower the presser foot and pull the thread. It
should pull noticeably harder.) If it passes this test, continue up through the
take up lever,then down through the thread guides to the needle. Make sure your
needle is fully inserted and turned the correct way.( If you load your bobbin
case from the left side,the needle rule is normally FLAT to the RIGHT is RIGHT.
There are some exceptions. If you have a newer style drop in bobbin or your
bobbin case loads in the front then the rule is FLAT to the BACK. sewman7