Engine occasionally jams, still able to operate manually
Periodically machine appears to jam. Engine sounds like it continues to operate, however needle does not move. Machine will still operate manually. After machine has been moved manually, engine will operate needle as per normal....... untill it happens again anyway. The problem does not seem to be affected by material type.
Have lubricated as per instructions, no improvement. The machine is under 12 months old and has had limited use. Any ideas???
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This may sound traumatic, but there is no easy way to pin point where the tie-up is located. So proceed as follows.
Cut all the threads as they come off the antennas.
Open the front cover and pull-out all the threads by pulling them straight toward the back. If they do not come easily, try moving the hand wheel back and forth by a 1/4 revolution .. this is like a rocking motion. If still not budging, start cutting back the threads and removing them in sections until all the threads are cleared. If this step is still challenging; check that there is no residual fabric or threads still wrapped around the loopers or other part/s of the serger. If so cut them out bit by bit until everything below is cleared.
Great. Now check for threads wrapped and/or jammed anywhere above.
Since the overlocker jammed, it is possible that the needles were bent. This will continue to cause issues in stitch formation. So just to make sure; change the needle/s. Make sure that the correct needle type is being used. Every overlocker is engineered to be used with a specific needle type. The needle type will be specified in the manual and will also appear on the needle package. If the needle types are not the same, do not use those needles.
Re-thread the overlocker and stitch test on a piece of fabric before pressing down on the foot control.
This should get the overlocker back on track and you back to overlocking.
Taking those parts out was a good idea. Some machines you can engage your thread cutter with the bobbin etc. removed. Try this . Make sure your presser foot is down and you fingers are out of the way. see if the sound is still there. if so, I would recomment you take it in for service. The jam could have knocked the cutter out of alignment.
make sure the machine is threaded according to the operations manual & the tension adjustment is according to the operations manual says
make sure the needle is not bent, and also the correct needle for the machine & fabric
if none of these work it needs to be taken in to be check
You need to remove the bobbin from the "race" by following the instructions in the manual. Give it a good clean and remove any bits of fluff and thread. Remove the upper thread also andmake sure that the tension wheel is clear of any broken threads and is on the correct setting. It may have been threaded wrong. The hand wheel not turning sounds like the bobbin area is jammed also.