Question about Kenmore Drop-In Bobbin 16231 Mechanical Sewing Machine

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Grab the wheel and now it will not sew think i striped the gear should have just let it break the needle does it need to be sent in to be repaired

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Frist look to see if you have thread bunched up in the bobin area, if so then you just didn't have the thread seated between top tension disc

Posted on Aug 14, 2010

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Posted on Jan 02, 2017

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I have a Singer 7466 and recently I developed an issue with the thread stripping and then breaking.


three possible reasons
old cotton will break or shred easily so get brand new cotton
next is eye size of the needle
a small eye with a heavy gauge cotton will not allow the cotton to pass easily
next is needle /hook timing
out of time allows the hook to pierce the needle thread and create the problem take it to a service centre for a check of the timing

Jan 11, 2017 | Singer 7466 Mechanical Sewing Machine

1 Answer

The bobbin driver assembly is not moving. Is this controlled by a gear that can be repaired or tightened?


1. There are gears that drive the hook assembly. Many machines have plastic gears and can be broken or will dry out and break due to age. Yes, the gears can be replaced.
2. The bobbin driver assembly does not suppose to spin! Under the bobbin assembly is the hook (sharp object) that turns.
3. Test the machine to see if it will sew by placing the needle on the far left and then on the far right. Try both to see if it will sew. If it is sewing on one or the other you will need some adjusting from a qualified repairman. The needle just for your information is swinging too far to one side or the other. The other most likely possibility is the timing is off.

Dec 05, 2015 | Sewing Machines

1 Answer

Thread breaking


The needle thread breaks
1. the needle thread is not threaded properly
2. The needle thread tension is to tight
3. The needle is bent or blunt
4. The needle is incorrectly inserted
5. The needle thread & the bobbin thread are not set under the presser foot when starting to sew
6. the threads were not drawn to the rear after sewing
7. The thread is either to heavy or to fine for the needle


Bobbin thread breaks

1. There is a right way & wrong way to insert the bobbin in the case --when you insert the bobbin in if it doesn't stitch correctly turn the bobbin over see if that helps or bobbin case is not inserted correctly

2. Lint has collected in the bobbin holder

3. The bobbin is damaged & doesn't turn smoothly

4. Lower thread tension is two tight

Aug 13, 2012 | Janome Sewing Machines

1 Answer

How to check timing on pe180d embroidery machine


In case of adjusting sewing machine timing, there are twomain parts that you should follow.To adjust the hook needle timing on the rotary hook, first,remove the bobbin, bobbin carrier, and covers so you can see the movement ofthe hook. This may involve removing the needle plate for top loadingassemblies, or removing the hook cap from the front of the machine. Itoften requires the removal of the lower covers to reach the componentparts. Adjust as needed when doing sewing machine repair.Set the machine to a straight stitch at the defaultposition. Different models have different default positions including themost common far left and center positions. If no problems are perceivedin needle bar positioning, the default position will suffice. If thereare needle bar position issues, these need to be adjusted prior to adjustingthe timing. Follow proper sewing machine repair procedures.Rotate the hand wheel toward youuntil you see the needle reach its lowest position and begin its rise. Now lookfor the point of the hook as you continue rotating the hand wheel. Thepoint of the hook should strike inside the needle scarf above the needleby about 0.5mm. Sewing machine repair is vital for smooth operations.Check to see if the hook fails topick up the thread. Double check the needle bar positioning including thehook needle spacing. If these are appropriate and the point of the needlestill fails to pick up the loop thread, proceed to adjust the timing of thehook. Maintain regular sewing machine repair. Look for the lower drivemechanism. It may be a lower shaft with gears on either end. If this isthe case, look to the right end of the shaft for a gear with adjusting setscrews. Loosen and manually adjust the position of the hook. Tightly hold thehand wheel while turning the drive shaft to set the proper position. Retighten adjusting screws. Some models have timing beltsthat control the timing of the sewing machine. Look for a belt connectedon each with to drive gears. Look for work cogs on the belt. Inmost cases, you can reset the timing belt, without replacing it. If,however, the belt requires replacement you will need to do so. Loosen the drive mechanism on the right side to free the movement of the belt.Manually adjust the position of the hook to the needle and re-tighten set screws. This knowledge is vital for effective sewing machine repair.Once the timing has been reset,conduct thorough test sewing on the sewing machine to make sure everything isworking properly.Hope this will help you. Good Luck.

Oct 16, 2011 | Brother Disney PE-180D Computerized Sewing...

1 Answer

Needle is getting caught in hook. i scarred the hook after sewing over a pin and breaking the pin below the plate. I removed the bobbin and race cover and the hook to discover the big scar on the hook. I...


If the plastic on the hook has been scarred / burred by a needle break, it is best to replace the hoo - they're not that expensive on this model and can certainly be purchased on-line. You can polish out some marks using very fine emery paper (>1200 grit), but if there are any deep grooves/holes in the plastic, the thread can get caught when its moving around the hook during sewing and it'll cause inconsistent stitch formation or broken threads. If the needle is still hitting the hook when rotating the handwheel, it could be that the hook driver has skipped a few teeth on the gear wheel when the pin got broken, in which case the machine's timing/synchronisation will have been affected and the only solution is to have it readjusted by a Bernina Service Agent - it's not something you can do yourself without the correct tools.

Aug 20, 2011 | Bernina Activa 140

1 Answer

I just bought a janome mini sewing machine. I


First, in order to get the bobbin thread up, you have to turn the wheel backward, not forward. If you try this, and it is not the problem, keep going.

Next you need to check the needle. There is a screw on the right side of the needle carriage right underneath the underside of the top...unscrew this and the needle should come right out. The flat side of the needle shank should go towards the back of the machine. If it isn't, switch it so that it is and try again.

If this doesn't solve your problem, what has happened is that the gears in the machine have gotten out of alignment. There is an easy fix:

Take off the plate that covers the bobbin chase...there are two screws one on each side. Remove these...you need a stub screwdriver, because regular ones will not fit under there.

Remove the bobbin carriage and the bobbin, making careful note of how they fit back in. Take a picture before disassembling it so you have a reference.

The part that carries the thread around the bobbin is still in the machine. Turn the wheel and you will see it rotate. What has happened is that the needle is not going down in the machine at the right point because someone kept sewing after it jammed and one gear kept going while the other one didn't and now it is out of alignment. These machines have plastic gears and the can slip past each other if you aren't careful not to stop immediately when they jam.

To fix it, you are going to have to do some trial and error. Grab the rotating part of the bobbin chase and hold it firmly. Rotate the wheel forward until you hear it click once. Then rotate the wheel backward again and see if it grabs the top thread. If it doesn't, repeat holding the bobbin chase and turning the wheel forward until it does.

Once you have the gears basically aligned, you will need to reassemble everything. Put the face plate back on and put at least one of the screws in all the way. The face plate holds the bobbin chase in correctly and if you don't fasten it it will not work correctly.

Now try sewing. If it starts to jam, stop immediately, cut the threads and look at the back. If it's a loopy mess, you are going to have to dissamble as before and again grasp the bobbin chase and turn the wheel forward one more click, then reassemble and try again. Eventually, you will find exactly the right alignment and the machine will sew perfectly.

I just had to make this fix on my own machine...I didn't want to take it in for repair because the bench fee alone would cost as much as the machine did!

There are some great video's on YouTube for help with threading the machine...look for StampTV and you should find them. Good luck!

Apr 18, 2010 | Janome Mini Compact

1 Answer

Problem with thread allways breaking. think its something to do with the block that the needles are mounted in. the block is at an angle instead of inline with the the machine. which then puts the two...


Most sergers on the market have needles that decend on an angle. Only a few are not made that way. Don't try to straighten it, the rest of the machine is designed with that "slant" in mind. Breaking thread in a serger can be many different things. Here are a few simple checks:
1. Change the needles
2. Make sure the thread is pulled deep into each tension unit, sometimes the thread will "ride" on the outside of the discs instead of being deep between the discs.
3. Check the needle plate and the loopers for rough areas. Sometimes the needles strike these parts and cause "burrs" which can grab the thread and not let go of it properly and it breaks or shreds the thread.
4. Some needle plates have pin like guides pressed into them. The sewing needles decend between these plate guides, however sometimes when a serger jams they can be broken. Verify that they are still there. They are very important for proper stitch formation, If they're gone, a new needle plate is needed.

I hope this helps

Oct 07, 2009 | Bernina Sewing Machines

1 Answer

Breaks needle


Yes they can indeed go out of time and breaking needles is the most likely cause. To solve timing problems you will need a sewing machine engineer though. The part which needs adjusting would be the area above the needle-the needlebar but it is a fiddly affair only to be attembed by someone who can repair sewing machines. It is also a fairly expensive repair as it is very time consuming. However-don't assume it is that. Firstly make sure the new needle is in correctly-the most common cause of problems is needles in wrong direction! If bobbin opens at front then the flat part of the needle faces the back. If bobbin area opens at side then the flat side of needle faces the body of the machine to the right. Check needleplate for damage so that new needle does not catch. File it smooth if you need to! Check you are using a good quality thread as cheap thread causes no end of problems. Guuterman is the best I found.

Feb 14, 2009 | Singer 8280 Mechanical Sewing Machine

1 Answer

Top & bobbin thread will not sew


Most likely the needle is in backwards. Weird I know, I have no idea why but if the needle is in wrong, it either hits the bobbin and breaks or won't grab the thread at all. Good luck.

Jan 06, 2009 | Brother LS-1520 Mechanical Sewing Machine

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