Question about Singer 7442 Mechanical Sewing Machine
My singer 2808, is not forming stitch. When needle is inserted manually, it picks up the bobbin thread, but when i run it no stitch is formed. Needle is fine, upper tension and lower tension seem fine. adjusted the tension several times, but still does not work
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Posted on Jan 02, 2017
SOURCE: Singer 2010
If model 2010, the problem is a part metal- part plastic part attached to the bottom of the bobbin winding lever, the white tear-shaped thing with the arrow on it. If that will turn past the center of the bobbin it's broken inside. to try a do-it-yourself fix, turn upside down, remove 4 screws, including one by the plug (which must be pulled out for safety anyway) remove bottom case. looking at left end of the works, move the bobbin lever and you'll see the broken part move. The plastic part should be broken about half-way down. You can see how the part should push the white plastic bobbin winding shaft up and down when lever moved. the part can be removed by loosening the 2 tiny hexnuts holding it on the metal shaft. you'll need the smallest size allen (hex) wrench there is. NOTE where the part is at bottom of the metal shaft for when you put have to put it back on. be careful to hold the bobbin winding shaft itself in place, but it's easy to see how it goes back in if it pops out. if the break is clean (like my wife's that I just fixed this way yesterday!) you can put a drop or 2 of good crazy glue in the break, making sure lined up on the sides, then clamp in a vise (or hold firmly together with pliers) for at least 10 mins, longer better. wait at least an hour before putting back. putting back on is a little tricky but you move the bobbin lever to left (open) position, make sure it's just on the end of the shaft (shaft barely protruding) and see where the part isn't pushing the bobbin winding shaft. re-tighten with hex wrench then see if the repaired part now pushes the bobbin winding shaft up and down when you move the lever back and forth. Turn back over and move the lever without a bobbin spool- you should see shaft move up in the middle of bobbin case where it will engage the bottom of the bobbin spool where the x is.
Now if part can't be fixed it is available from auth Singer service center in you state but runs $40 or so. they'll try to tell you they have to install it because of special anti-static gloves that wont fry your motherboard on the machine's computer, but the center in Michigan finally said they would mail it to me. hope this helps! funny I just saw this after fixing our machine which hadn't been used for a long time until I decided I might as well look inside if I was going to have to buy her a new machine!!!
Posted on Nov 24, 2008
Lint or thread caught in the Bobbin Case spring......check all about tension here below.
Please TRY the solution BEFORE giving your considered rating.
Specific detail on bobbin case adjustment (with picture) near halfway down reply, the remainder will help you achieve a balance of top and bottom tensions.
Ensure that all is clean and free of lint and jams, this is the most likely cause....now for tension troubleshooting .......
This solution is for tension problems...if you cannot form any sort of stitch, the issue is quite different, so please let me know if you need a different problem solved.....
It is quite long, but just work through each section in order.
The "knotting up" can reveal a lot. If you have loose threads on one side or the other, the tension on the opposite side will be the culprit.
QUICK SUMMARY FIRST:
Ensure sharp new needle,
Thread guides and Bobbin are Clean & Clear of lint
Set Top Tesion to 4 ....then....
Balance Bobbin to suit.
TOP THREAD TENSION:
If the looping threads are on the underside as you sew, it is the top tension. Top tension ought to be between 4 & 6 (this variation to allow for the different weights of fabric in your projects).
IS YOUR NEEDLE SHARP ?
If you are using a needle that has seen quite a deal of work, or you suspect it may be blunt, change it for a new one !
TOP TENSION & GUIDES:
Make sure that when you thread the machine the presser foot is up so the thread goes between the discs and not to one side, top tension between 4 and 6, and that you have threaded through all the guides, including the last one, usually on the needle arm, just above the needle clamp.
It may be there is lint trapped between the discs, this will keep them slightly apart and reduce the actual tension, sometimes dramatically.
If tensions appear correct, and the thread is definitely in the channel between the discs, but still too loose and looping, try raising presser foot and remove your thread.
Now, with a 2" (50mm) wide strip piece of fabric 8 - 10" (20 - 25cm) moistened with methylated or denatured spirit, gently insert the fabric strip and clean between the discs with a see saw / to and fro action.
In the worst cases, gentle use of a needle to pick & remove the jam may be necessary, but be very gentle and make sure the tension is set at Zero and the presser foot is raised, (to disengage tension plates).... do not gouge or score the plates, they need a polished surface to work correctly.
Far less common, but if the loose threads are on the top, it is bobbin tension that is loose, it too may have lint in the spring and be giving a "false" tension.
I would not recommend fiddling with bobbin tension without good reason, it may end up with missing small screws and spring pieces, however, you can take the needle plate off to clean
the hook race area (where bobbin case sits)
...this is just good housekeeping, my wife does this every time she replaces the bobbin....
just take it out and clean the bobbin case and the fixed metal hook race with a small brush to remove lint. If there is a significant amount of lint, use a vacuum and small brush to get the worst.
Then wipe all this area with a cloth or cotton bud (Q tip) moistened (not soaked) with methylated spirit, especially if there appears to be fine dirty deposits....oil and lint combine to conspire against you.
If it seems likely that you ......really ....do .....actually .....need .....to adjust the bobbin case, first check there is no lint trapped in the metal spring where the thread is tensioned.
Drop-in Bobbin case will look similar to this image with the tension screw in the middle of the metalwork....
...the other screw at one end is holding it all together, so beware....it is not a tragedy to undo the whole lot and clean it, but very gingerly and lay the bits out in sequence and orientation, or you risk tearing your hair out !
....this is a bobbin case from a front loading machine and works in a very similar fashion to the top loader with drop in bobbin, again, if you dismantle it, take care so you can put it all
GETTING THE BALANCE RIGHT:
When you are certain there's no trapped lint in top tension or bobbin, set the top tension to 4 and the bobbin tension to a point where you just begin to feel resistance.
Try using good quality thread of contrasting colours so you can more easily spot the changes.
Set your zigzag to one width less than maximum (eg. 5 of 6 ...or... 4 of 5 etc) and sew a sample for a few inches and check the result.... adjust the bobbin tension screw very little at
a time, perhaps 1/16 of a turn.
You may find you are playing with this balance for some little while and if you are putting the needleplate on and off each time begin to think it cannot be correct to do this.....BUT....it is,
and eventually, you do get a "feel" for the correct tension and then it happens quite quickly.....as a user you won't be doing it very often unless there is lint built up (or are there small hands at work around the house !?!?!)
If you live near the ocean as we do, salt air can play havoc with metalwork inside and out, so to help minimise this, keep a few small packets of dessicant (silica gel) in your machine
case....no case ? then make some sort of cover !
Same applies in any damp or humid environment, keep your machine dry and dust free.
Budget for a proper full service every couple of years (more often if heavily used) and if you don't use your machine for a few years, be aware that old oil will dry out and combining with
dust and form a "clag" like glue (another reason for some sort of cover, even a teatowel !)
FINALLY, A WORD ON THREAD:
If it is worth spending the time, energy and money on making something that you would like to give lasting enjoyment......use quality thread, .......it may seem to cost a little more at the
time, but the results, ease of use and added longevity will be worth the extra, and as a bonus, your tension troubles may be fewer and further between, because there is a more consistent diameter with good thread, and less compensating to be done by your tension plates and less thread breaks
Posted on Aug 02, 2009
I make flannel square quilts for babies, it is a nightmare itself. It makes a lot of lint in the bobbin case and under the face plate, try prewashing the fabric before using it and clean out the bobbin case frequently while sewing. When i dont prewash it, i just open the bobbin area and blow the cotton dust out with my breath or i use the small brush to clean it out
Posted on Dec 13, 2009
Testimonial: "Thank you -- excellent suggestions. I had prewashed the flannel and cleaned the lint out frequently-but didn't help this time. Thnx for valuable ideas"
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