Question about Sewing Machines
Have re-threaded overlocker several times, perhaps i'm missing something but the left needle thread is not stitching - what could be the problem?
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Posted on Jan 02, 2017
SOURCE: mock safety stitch
Sounds like the timing is a little out.
If you remove the needle plate and turn the handwheel manually watch for the lower looper as it swings behind the Left needle....the needles ought to rise by only about 2mm before the looper passes......the looper must pass the needle above the eye to catch the thread, and be so close as to be barely touching the rear of the needles......if the left needle thread is not picked up, it may be the timing, or the distance between needle and looper.
For the uninitiated, there are a myriad of variables in correctly timing an overlocker (serger), and without the manual to refer to the correct parameters, you will rapidly descend down a road of despair....if you move a looper to advance or ****** the timing, you risk looper collision and a broken looper is almost as much as a service, so my advice is do the test to see if the timing is the likely culprit, and if so, take the opportunity to give the old girl a treat.
If you need to save for a while to do it, just use the 3 thread option for the time being.
Posted on May 10, 2008
I was having this very same problem with my lower looper . I had been using the one needle stitching all afternoon and I was doing quite nice stitching. then I decided to put the right needle back in and do some overlock stitching and guess what I spent the next two hours fighting the looper problem. I had completely re-thread this machine at least 20 times now. I decided to take the needle out and re-insert it and re-thread it one more time (right lower looper- then upper looper- right needle- then left needle) was careful to pull all threads to the back and under the presser foot for about 6 inches.
Held on to the thread, lowered presser foot and did the chaining stitch. BINGO it didn't break, tried it with a piece of cloth and Perfect stitches. I have a Babylock BL402 and used tension settings left to right
4-3-3-3 and default settings for the rest.
Hope this helps someone someday.
Posted on Mar 29, 2009
All sergers thread the same way and sergers have to be threaded in a certain order. I made a jingle out of it...
It would be best to have a tweezers handy to help with the thread and threading.
always be sure the lower looper thread goes over the top of the upper looper then out the back. I would be surprised if your thread guides are not color coded.
If you look at the top thread guides or the spools. First from left to right thread the 3rd spool, then the fourth spool. Then you thread the right needle (the second spool) then the left needle (1st spool.
The lower looper can be tricky because you have to thread it from the back of the looper to the front.
Pull the threads out the back from under the foot. Then go ahead and run it slow watching to see if it starts making a chain. It should. If not do it over again.
Posted on Aug 03, 2009
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