Some troubleshooting tips for your Elna T34D overlocker
Make sure your tension is not too tight and that there is no fluff or cotton stuck in between your tension plates. I sometimes use a string of the stitch to pull in between the tension plates. I always set the needles tension first and then i balance the tension of the upper and lower looper. Make sure the cotton are not looped around a guide. Black cotton and some cottons can build up their own tension. Try different cotton. I've had many a headache with this problem.
Check that the needles are not blunt or bent. I always use schmetz needles. If your needle plate has any damage where the cotton can get hooked. You can see this in the pictures below. Use a small file or sandpaper to remove it. The stitch tongue must be very smooth and the stitch must slide of smoothly. Check that your lower looper point does not have a sharp hook(bur) on it. You can use a very fine water sandpaper to remove it.
If your needles are touching the looper, i could indicate that your lower looper is out of position. (Always check this with new needles) You can get the Elna T34D overlocker instruction manual from sewingnz shop.
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The sewing machine's instruction manual should always be reviewed for troubleshooting steps when problems arise. The first things to check would be that your needle is not damaged or bent and that it is inserted correctly and all the way in. Sometimes you need a stretch needle for stretchy fabric!! The other major player is excessive tension caused by [...]
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