Question about Simplicity SL370 Mechanical Sewing Machine

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First time user simplicity sl 370

Fisrst time try to use a simplicity sl 370 serger.The loop is not forming.Any sugestions?

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SOURCE: problems threading a Europro serger

Probably the needle hit one of the loopers and left a burr on it that is catching the thread. Run your finger nail acroos the edges of the loopers. If you find a burr it can be polished off using very, very fine crocus paper from a hardware store.
Or the needle hit a the upper looper and knocked it slightly out of position.
After you have it threaded (correctly) turn it slow by hand and watch the loopers very closely. You will probably see what is happening.

Posted on Dec 12, 2008

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SOURCE: just got a used simplicity serger how to use and

Sergers are used to finish raw edges.

Not the best choice for quilting and purse making.

Posted on Apr 06, 2010

Tally Girl
  • 1117 Answers

SOURCE: I need a manual for a Simplicity Easy Lock Serger

You can purchase a manual for this machine from the following link for $US14.99

I can't see it anywhere for free download unfortunately. But you may find that looking at a manual for another 4 thread overlocker may get you started. If you try this link you can look at the free Singer downloads,
try this link for their 654 3/4 thread model
it may give you some help now.

Essentially, to change the stitch width you can either move the lower fixed blade wider to cut less fabric or tighten up the upper and lower looper threads in order to close up the stitching.

Moving the blade usually means opening up the front cover door, putting pressure on the upper blade and swinging it up out of the way. Then you can adjust the lower blade, usally by turning a knob near to it. Sometimes this knob will be marked 1, 2, 3.

Adjusting the looper tensions is done by changing the tension dial settings for the thread needing adjusting. If its a standard four thread overlocker that produces a "marrow" seam it will have two needles and two loopers, upper and lower. Generally on most overlockers, the upper looper will be the second from right tension dial and lower looper will be right most tension dial - turn up one half number to tighten, or down one half number increment to loosen, then test stitch again. The needles shouldn't need adjusting too often.

I usually start with all tension dials on 5, test stitch, then adjust from there. Some fabrics will tunnel (pull in) if the seam is too wide so you need to either move the blade to the left and trim more fabric or loosen off the loopers. Or in the reverse, like you are getting, the threads will hang off the edge.

There is some good serger information on Debbis Cosgrove's pages but if you have never used a serger, then getting the genuine manual is probably best.

Posted on Oct 17, 2011

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How to oil a simplicity serger SL370?

The owner's manual is the best resource for oiling instructions. After that, probably a sewing repair shop.

Instruction Manual Simplicity SL370

Different machines require different oiling. As a serger, it most likely requires more frequent oiling than a sewing machine, so it is important that it be cleaned and regularly.


May 31, 2016 | Simplicity Sewing Machines

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The serger will not form the initial chain. Have checked threading and have new needles, any ideas?

It's an odd thing but on my serger, it actually matters the order in which I thread it. I *try* to tie the new thread to the old and pull it through rather than re-threading, but when I've had to re-thread, I've had trouble getting it to loop again when I thread left to right. It seems that the loopers only loop if the right looper is threaded before the left.

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I need to know how to oil a simplicity serger-easy lock-with differential feed

I have a Simplicity serger SL880 that was my mothers. She past away about 8 years ago. I was trying to use it but appears the motor may be locked up that moves the feed dogs. Is there a place to oil it? If so where? Thank you.

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Just got a used simplicity serger how to use and why use a serger . i really don't sew much but like to make purses, quilts is it worth using a serger or where should one use a serger?

Sergers do pretty much have a certain function--to finish raw edges, although there are some other decorative things you can do with a serger if it has the capability. Download the pdf file at this site to get some ideas:,d.b2w You can also join some sites that will email you projects every week that can be made on a serger.

A serger is great for making t-shirts (stretchy fabric), tablecloths, napkins, placemats, etc. The rolled hem is nice! And, yes, you can make quilts although it is best to use a sewing machine when intricate stitching of pieces require that the points meet, and the 1/4 inch seam is pertinent to the design. A serger does do a great quilt by serging strip pieces together where the 1/4 inch seam allowance and matching points are not a requirement. It will put a strip-pieced quilt top together very quickly. (Its really quick if you purchase the precut Jelly Roll fabric.) But you will need to figure out how to quilt the top, batting, and backing together using something other than a serger--or pay someone to do it for you.

Or try making a Quilt as You Go quilt where you would serge the top strip, batting, and backing strip all together. When you are finished putting the quilt together, all you will need to do is add the binding--the first part you can use a serger, but when you flip the binding over to the front side to finish, you'll probably want to handstitch it.
How To Sew An Easy Strip Quilt
40 Free Jelly Roll Quilt Patterns 5 New Jelly Roll Quilts
Quilt as You Go Strip Quilt National Quilters Circle

Apr 05, 2010 | Simplicity Serge Pro SW432 Mechanical...

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Need replacement cutting blades on my simplicity serger easy lock 804 or go to Google, type in: "Replacement blades for a serger". Hope this will help. I have the same serger. --Tricie

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