Question about PfaFF Sewing Machines
I have an older honeymoon 799. Recently I tried to use it with a 2 thread rolled hem stitch that needs the lower looped disengaged. For some reason the button that one is supposed to pull out and turn to lock into the 1 space is frozen and will not change positions.
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Posted on Jan 02, 2017
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
retime your hook with relation to your needle the hook is slightly out of time causing it to "slip the loop" the hook should hold the loop until the needle retracts forming the chain
Posted on Apr 30, 2009
From what I have read this manual is less than desirable. Neither is the one for the brand that I have.
You may have better guidance if you purchase and use Nancy Zieman's "Serge with Confidence". I have found it very helpful.
For the two thread rolled hem, the looper cover is used to "trick" the looper into "thinking" it is threaded.
On my serger (not a Bernina), this is referred to as a "subsidiary looper". It is a spring type mechanism that fits in a small hole at the top of the upper looper.
You use a rolled edge presser foot; right or left needle; stitch length @ normal or wider; stitch length @ 1mm for the left needle/0.5 for the right needle; differential feed @ normal; needle tension - tighten; lower looper tension - normal or looser; two thread looper cover - engaged.
Test and adjust the tension as needed before making the rolled hem on your garment.
I hope this helps.
Posted on Apr 18, 2010
All tensions should be on 4. Also, make sure the threading is done correctly. Or if you wish; You can contact me on other sergers for sale. "Best prices guaranteed"! firstname.lastname@example.org
Posted on Sep 16, 2010
SOURCE: I am trying to do
no, you need the blade in place and cutting to give an even cut fabric edge. Set up for a three thread using the right hand needle, take out the left hand needle. move blade over to the right so it is cutting wide. Most overlockers there is also a thread finger you need to change on the foot, or a little lever you flick to move this finger forward into the stitching area. Check this on your manual as each make is a bit different.
If you can source it, put wooly nylon thread into the upper looper (knot it onto existing thread and just chain it through, the knot should go through the looper eye fine). Now turn the tension on top looper down so it is looser and tighten up tension on bottom looper, so needle 5, top looper 2 and bottom looper about 7.
Now test serge, the fabric cut edge should be wider than the overlocking seam so the fabric rolls under inside the stitching. Adjust the two looper threads so that this is happening, you want the bottom looper thread to nest right up against the needle stitch and the top looper thread to wrap all the way around too.
Once you've got this happening, turn the stitch length down to 0.5, to close the stitching right up. On some fabrics you'll need to adjust the differential feed too if the fabric is "waving" a bit.
Uneven stitches or sometimes loose when serging could indicate that one of the tension devices is faulting, so if this machine is not new and its doing this, it could need a service. Can you get a regular smooth three or 4 thread seam out if it???
It is always good to just recheck the threading path, make sure the thread aerial is up and that a thread hasn't got caught back on the thread stand somewhere if you're getting something wonky happening, threads stream off overlocker cones through the machine so anything wrong in the thread path will throw off the stitching.
Posted on Jun 26, 2011
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