Need diagram for threading and tension - Sewing Machines

Oops! All sewing machine diagrams/manuals are available, online. Oddly. From the late 1800's, on.

From the photo, it appears that you may have the thread path correct, but it does appear that the thread is not seated in the tension disk (the round knob that the thread goes around before going up to the take-up lever). There is a spring in the tension disk that needs to be activated. FIRST, be sure when you thread the upper thread, ALWAYS RAISE the presser foot. These releases the tension disk and allows the thread to seat. Also, when going around the tension knob, hold the thread above where it goes around the knob and make a complete circle around the tension disk and tug. This should seat it in the spring.

Brother 651 Charger Sewing Machine Threading Diagram

A manual would be most helpful, not only in how to use your machine but also how to maintain (clean & oil) it.

If you don't have a manual, search the internet for:

Make + Model + the word "Manual"

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Consult the owner's manual or search the internet for:

Make + Model + the word "Manual"

Factory standard upper tension setting is halfway between the high and low tension numbers. Correct tension is when the upper thread and bobbin thread meet in the middle of the fabric.

Upper tension is meant to be the method for tweaking tension. A sewist should become comfortable with adjusting the upper tension, especially when fabric, thread, or needle are changed.

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Search the internet for:

Make + Model + "threading"

The factory standard tension is the midway point between the high & low number. Then tweak the tension from there. Tighten to pull the lower thread higher in the fabric, Loosen to bring the top thread lower in the fabric.

Search the internet for "sewing machine tension"

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Search the internet for:
Manufacturer + Model + the word "Manual"

or search YouTube videos for "sewing machine threading." You may not find your exact machine, but many machines have similar threading patterns. Be sure to raise the presser foot before threading the upper thread so it will seat properly in the tension disk.

If the thread is breaking at the needle, it could be several problems:
Threaded incorrectly--#1 cause
Upper tension too tight
Install a brand new needle compatible with the fabric & thread
Make sure the thread is not too large for the needle eye
Avoid old, fuzzy, bargain bin thread

All About Needles

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tension on an Elna L4 overlocker (or serger in USA) is controlled with the four dials on the front of the machine, an overlocker has a tension dial for each thread (usually 3, 4 or 5) and the mid range setting will be 5 on each dial. It is critical to lift the thread pole to its maximum height and follow the threading diagram correctly taking the thread from the cone, through the thread eyelets on the pole, then usually a thread carrier on top of the machine, down and around the tension dial, then usually through another couple of thread carriers until reaching the needle or loopers. Many overlockers will have a threading diagram inside the front looper cover and will use colour coding on the components so you can see where each thread goes.

Looping on the underside is usually your top thread coming through as its not under tension correctly. So rethread the top of the machine carefully, checking your threading diagram in the manual and checking the thread is going between the tension discs carefully.

You also should clean between the tension discs regularly as thread sheds dye particles and fine fibres and this will build up with time. Turn tension dial to zero, then carefully slide in the selvage edge of a piece of waste cotton and slide it back and forwards between the discs carefully to remove any buildup.

Now turn tension dial back to the medium number, usually 4 or 5 is the recommended setting, and rethread top and bottom as per your manual threading diagram, and try again.

There is good general machine maintenance and threading information at www.sewing.about.com, however if the above fails to improve the situation, then perhaps the top tension device has failed and needs replacing.

Hi

If you have the operators manual for this serger, you should be able to follow the threading from the start successfully. Some machines have a better threading diagram on the machine itself.

The needles should have the groove facing the operator's position. They should also be fully inserted in their mounts. Most sergers do not release the thread tensions when the presser foot is raised, therefore, you must zero the tensions to make sure the threads are fully entered into the tensioners when threading anew. After threading, you must readjust your thread tensions to the desired tensions for the set-up you plan to use. Thread tensions should be recorded for each stitch set-up because each serger tends to be a bit different, and therefore, allows you to quickly adjust for the desired stitch needed. The different stitches are adjust and fine tuned by each individual thread tension.

Hope this helps
Ray

hi there,
well, try to log on www.youtube.com on search box type "sewing machine" then select your want to know on ssewing the click,there are several basic step on how to thread and bobbins winding,and setting up upper and lower tension.regards and hope this could help you a lot.

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Beginning with the spool, guide the thread through the thread guides to the tension assembly. Pull the thread through the tension assembly and test it to make sure the tension is working correctly.
(To do this test, adjust your tension setting to normal or medium or 5 or something in the middle. Raise the presser foot and pull the thread through the tension. It should pull easily!! Lower the presser foot and pull the thread. It should pull noticeably harder.) If it passes this test, continue up through the take up lever,then down through the thread guides to the needle. Make sure your needle is fully inserted and turned the correct way.( If you load your bobbin case from the left side,the needle rule is normally FLAT to the RIGHT is RIGHT. There are some exceptions. If you have a newer style drop in bobbin or your bobbin case loads in the front then the rule is FLAT to the BACK.

Sewman7