Question about Euro-Pro Shark 80 - 7133

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Euro-Pro 7133 - Thread is getting stuck underneath

I can sew about 3 stitches and then the needle just stops. When I open the bottom there is a birds nest of thread all tangled around the mechanism around the bobbin. I have dismantled the whole bobbin casing and cleaned, oiled it. I have adjusted all the tensions and it keeps doing it. Any clues? Thanks!

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  • Deb1125 Feb 25, 2008

    I just bought this sewing machine, so it has never been used and has the original tension settings, I tried changing them but to no avail. I never get any stitches, it just jams right away. The needle goes up and down 2-3 times then gets stuck. The birds nest I get is not around the bobbin, but around the hardware that surrounds the bobbin case. I will try all the suggestions above. Thanks for the suggestions. Deb

  • Deb1125 Feb 28, 2008

    It was the last one at the store, so I can't get another one. It was on clearance and I'm really hoping to get this one fixed. When I went back to try to adjust the tension, I discovered that it was getting jammed just trying to pull the bobbin thread. So, I opened the front door to watch it pull the bobbin thread, and it appears that the top thread is getting caught around the unit that holds the bobbin case. That is where the problem lies, I went ahead and pulled the bobbin thread, but when I do get it to do a stitch or two, that top thread gets caught around that unit again. So, I don't think it has anything to do with the tension. Help! I really want to keep this machine.

  • Deb1125 Mar 11, 2008

    Thank you so much! That was exactly the problem. I was missing that little hook when the needle is all the way up. Thank you, thank you!!!

    Deb

  • Beth VA Apr 06, 2008

    I am having the exact same problem, I wll try rethreading, I have since tried removing the whole bobbin casing to see the problem to just seeing it get cought around the unit that holds the bobbin case. Thanks,

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5 Answers

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Make sure you clean up all the oil......it is not a universal cure all contrary to opinion....

Now, down to business..........

Ensure the presser foot is firm enough for the fabric you are using and that it will not just pull through easily by hand with the foot and feeddogs together (as the needle ascends), or things will not proceed, and you will be stitching in the same spot.

Generally a setting of 3 seems to work for general purposes, but if you are using very light or very heavy fabric, a sample is always a good idea before you start in earnest....also match the needle to the work for best results.

Ensure that all is clean and free of lint jams....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.

BOBBIN TENSION:
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.

TOP LOADER:
Drop-in Bobbin case will look similar to this image with the tension screw in the middle of the metalwork....

Euro-Pro 7133 - Thread is getting stuck underneath - 4c76dc1.jpg ...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 !

FRONT LOADER:
....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
back properly.
165ca5c.jpg
FINISHING UP
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 !?!?!)

OTHER ISSUES:
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 consistant diameter with good thread, and less compensating to be done by your tension plates and less thread breaks !

If you want any more help with this, just post back here, or, drop a line through the "Contact Us" page at www.bargainbox.com.au

Posted on Feb 25, 2008

  • Bargain Box
    Bargain Box Feb 25, 2008

    Check there is no packing foam etc caught in the tension unit........ if it is so new, take it back to the store and ask for assistance.....take a sample with you as evidence.

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  • Contributor
  • 2 Answers

I had similiar problems.

When trreading the upper thread the thread must catch a silver lever (between narrow grooves) that goes up and down, adjusting the thread tension automatically. Use the presser foot to ensure that that silver lever in in the upmost position while threading. Hope that works.

Posted on Jul 27, 2008

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I had the same problem. I bought a new bobbin case which solved the problem. Only problem now is that you can not get any parts from the manufacture. I have been told that they have gone bankrupt. Would like to know when they will be back on their feet again or will I need to end up buying another machine.

Posted on Mar 14, 2008

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  • 15 Answers

Seems like you still have a tension problem. Check that the upper tread is treaded correctly. Normaly this happen if the uppertread is to loose, or the bobbin tread are to tight.

Posted on Feb 25, 2008

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I had the exact same problem!!!!finally i took to the store and they showed me that i was not threading the too string correctly. what you have to make sure that the needle is at its highest position and that you thread it through all the guides!

Posted on Mar 07, 2008

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