My tension will not stay tight on my Bernette 134 Serger. What can I do. It sews pretty for a while but is not consistent.

Be sure you have the proper foot for your machine to make a rolled hem.

Bernette 203 How to use rolled hem foot have the one page manual but it...

Sew Inspired Serger Rolled Hem Tips

In case you don't have a manual, you may be able to glean some information here:
Sergers Overlockers
need manual for the Bernina Bernette 203 overlocker

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Thin, light-weight fabrics present some issues with sergers, ie the fabric tunnels with the stitching. Usually, it is better to use a narrow seam. Also, a stabilizer (wash-away) or even adding a strip of thin paper (toilet tissue, adding machine tape, etc) to the seam will help the fabric hold its shape when stitching. I have also sprayed & ironed heavy starch on thin fabrics to help stabilize.

sewing patternreview com

Serging Chiffon and Other Slippery Fabrics

Make It Handmade Understanding Your Serger Features

30 Best Tips for Sewing Knits with Serger Sewing Machine Serger Pepper


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try these links for a manual

Bernette 134D 134 Overlocker Overlocker Instruction Manual

Bernina 134 134 Bernette Instruction Manual

Bernina 800DL Serger Machine


Bernina Manuals mrsewing

you didn't mention the name and model number of the sewing machine or serger... is the loopy thread on top or bottom? when is the thread tight? what type of cotton fabric,, solid cotton--polyster cotton? normally mine stays on 4 or 5 --depends on fabric I'm sewing..

try this link for parts Bernette MO334DS Parts
or check with a bernina dealer

Try http://www.sewingnz.com/bernette-134d-134-overlocker-overlocker-instruction-manual/ (10.00).

Serger thread breaks

1. Is the serger threaded correctly?

2. Is the needles inserted correctly?

3. Is one of the needles bent or damaged?

4. Is the tension adjusted too tightly?

5. Is the tension adjusted to accommodate thickness of thread being used?

6. Are you using inferior quality thread?

7. Is the thread feeding of the cone/spool freely?

8. Is the needle size correct for the type of fabric being used?

9. Are the needles being used the correct one for the serger?

10.check in the needle plate area to see if there is a burr

11. Check the looper to see if there is a burr or if it looks damaged


If all of the above suggestions don't help then the serger needs to be checked to see if there is something wrong with the loopers and also see if there is a problem with the tension.

How to Thread Juki MO-134 Serger from watching lady at Lyles. Turn upper blade up. Push in first then turn up.It makes threading easier. Blue Thread upper looper first. Pull thread through tension knob. Don'tjust lay it there. (She thought that is what I must have done) Orange Thread lower looper next. Pull thread through tension knob as inthreading upper looper. Adjust lower looper so it is right nextto upper looper so that their points are almost together and directly belowsewing needles. Lower looper will be in front of upper looper (I believe). With tread from upper looper pulledback, slightly lift lower looper above upper looper and thread. I think this isright. Pull thread back with other thread. Tension is the key. Remember that. Yellow: Thread left needle first.Remember tension. Pull thread through curled wire on left side of needle arm. Green: Thread right needle. Rememberabout tension. Pull thread through curled wire on right side of needle arm. b> Note: Before sewing turn the wheel tomake sure the stitches are going together correctly.

my bernette do not teke tha low strak

i have a bernette funlock 006d and in moving we have misplaced the instruction booklet. can i purchase one or possible download the booklet?