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Singer 3815A broken cam belt . How do I reset the bobbin and needle timing when fitting a new belt

The bobbin cradle needs to be timed with the needle position when new cam belt is fitted! how do i do this

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Posted on Jan 02, 2017

  • 323 Answers

SOURCE: Singer-Inspiration 4220/4228

Send this machine back where it came from! machine. You have described a timing problem which you can not and should not need to do.
Change the needle first and test it to be sure the needle still hits on the hook. If it does,follow the above instructions. If it no longer hits then it's possible it is not as serious as I first thought.I'm not sure if the bobbin keeps coming out or the bobbin case(the plastic part the bobbin sits in) comes out.If it is just the bobbin, insert the bobbin in the case and pull on the thread. The bobbin should turn COUNTERCLOCKWISE. If it turns the other way, turn it upside down and try it again.
If it is the bobbincase,then Remove the needle plate and take the bobbin case completely out. On this machine there is a small lever which holds the bobbin case in position. Looking down on the bobbin case the lever is located at about 11 o'clock and has a small slot in it. It is also probably spring loaded which means it is not easy to turn without a small screwdriver. Insert the screwdriver in the slot and turn it to the left. Lift out the bobbin case and Carefully examine it for any nicks, scratches or rough spots. If you find any, they will need to be removed with an emery stick and or a sharpening stone. Buff with a very fine steel wool for total smoothness.
To replace the bobbin case use the screwdriver to open and hold the lever open while you insert the case back in. The straight part of the case will be on the right and you need to place the case so that the circular part rides on the slight grove in the hook.(The metal thing it sits on). Once you have it in place you can release the lever you've been holding open . It should fit over the edge of the bobbin case and not allow it to come out. Rethread the machine and turn it by hand a few times to see that it is working properly. Good luck!!!
sewman7

Posted on Jul 01, 2008

kent581
  • 87 Answers

SOURCE: bobbin case retainer popping out on Singer Touch & Sew 625

Take the bobbin case out. Then when you go to put it in, realize there are 2 ways to get it. You have found one way. The other way is first look in the the slot with a flashlight before you insert it. There is a flat piece of metal the bracket needs to be slid under as it is inserted. This acts like a spring making it tight

Posted on Mar 18, 2009

  • 2 Answers

SOURCE: singer quantum cxl sewing machine needle hitting metal

Your needle is probably to long or you need to open it more

Posted on Apr 08, 2009

  • 1 Answer

SOURCE: Singer featherweight 221 timeing is off

I am having a similar problem with my machine except it got much worse and now does not sew consistently. The needle is contacting the bobbin case. I found the following information about adjusting the timing and it looks like it might solve my problem- keeping my fingers crossed- maybe it will help you too.

http://www.vintage-sewing-repair-wizard.com/id2.html

http://www.singer-featherweight.com/servicemanpix-pages/Service-9.html

Posted on Sep 19, 2009

  • 20 Answers

SOURCE: needle hitting bobbin case model 750

This is a timing problem the hook timing needs adjustment, and possible the needle timing also

Posted on Oct 13, 2009

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2 Answers

Needle Jams In Bobbin Case Area pfaff 1540


First, make sure there is no debris and scraps of thread in the bobbin area. I'm sure you did that already. I assume you also tried it with another thread just to be sure. I would suspect that the timing went out of whack. The machines depend on a synchronization between the needle motion and the bobbin action underneath. I once had a Singer that slipped and I had to reset the timing. If it is the timing synch problem then it would happen consistently and not work sometimes and then not work other times. G

Jan 27, 2014 | PfaFF Sewing Machines

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Husqvarna #1+ sewing machine, is breaking needles under throat plate


This could be bad timing, or the needle is not in properly.
Make sure that the needle is pushed up all the way, and in the correct position. If the needle is too low, it will break.
Also, keep the bobbin case door open to see where the needle is catching.

Apr 10, 2013 | Husqvarna 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

My needle has started hitting on the bobbin case in the mahine,can anyone tell me how to fix this problem.


Could be a couple of things:

Could be a bent needle? please change it for a sharp new one and make sure it goes in correctly, flat shank to the back.

Bobbin case dislodged or not in correctly ; I think these are vertical rotary hook machines with the bobbin inside a removeable bobbin case? Check that you have put the case in correctly, there is usually a long finger on the case that latches into a point on the rotary hook, holding the case in the correct position. Probably also a latch on the front of the bobbin case, which you use to fit it into place and remove it.

Lastly could be that the machine timing is out. Manually turn through a stitch sequence with no thread or bobbin, the needle needs to be at its lowest point down into the bobbin area when the rotary hook brings the thread around to catch at the back of the needle.

If you suspect it is the timing, you may want to get a technician to do this repair but certainly try the first two items first.

Oct 13, 2011 | PfaFF Creative 7570

1 Answer

Bobbin trouble


Remove the needle plate for better access and try using a seam ripper to gently cut the threads and continue to remove with the tweezers.

The needle plate is the metal plate under the presser foot and is held into place with at least two screws.

The bobbin fits into the bobbin case.

The bobbin case fits into the bobbin shuttle.

Once you get the jam cleaned away, raise the needle to it's highest position and remove the bobbin case and/or replace the bobbin case.

Jamming can cause the machine to be out of time.

If you thead the machine with the presser foot up, have the bobbin inserted into the bobbin case correctly and the stiching is loose and loopy the machine may need to go into the shop for service.

May 01, 2010 | PfaFF Hobby 4260

1 Answer

My needle jams when it hits the tray the bobbin case is in. It looks as if the timings off because just to the right of where my needle hits is a dip in the tray. Almost as if the needle's too long. I've...


If this is a drop-in/horizontal bobbin, raise the needle to it's highest position. Remove the bobbin case then replace it so it fits snugly into the shuttle. Hand walk to see if the case moves freely in a circle. If it stops, it is not positioned correctly. You do not have to have a needle in to test this.

Once you are sure the bobbin case is correctly in place, re-install the needle. Hand Walk to make sure the case turns without any interference.

If the needle continues to hit, then the machine needs to go into the shop for service.

There is a DIY for adjusting the timing of the hook sewusa.com if you wish to try the adjustment on your own.

Mar 14, 2010 | Kenmore Drop-In Bobbin 505S-21BH...

1 Answer

MAY NEED A CAM SHAFT FOR A FUTURA MODEL 900


I would get a second opinion about the timing...it has nothing to do with any cam.
Timing is relationship between Hook and needle, Cam is the stitch type.....if you can make a zig zag, timing is fine and all other stitches will be fine.....(provided tensions are balanced)
If cam is cracked, not all stitches will work, or may not be consistent, but the stitch will be created if the timing is good.
Handwheel tight...probably overtight motor belt adjustment....bobbin winding...well did it work before or is this new ?
Speak to Husky about a reputable service centre and have them take a look at it, they will also be able to advise parts availability if that proves necessary.

Aug 31, 2009 | Sewing Machines

1 Answer

My needle keeps hitting the bobbin casing...have switched needles incase bent....have tried moving needle position..still hitting casing


Your timing is off. There should be a ruber belt behind your hand wheel, if you take off the case around it; you should be able to adjust your timing of the bobbin casing.

Jul 31, 2009 | Kenmore 15208 Mechanical Sewing Machine

1 Answer

Singer Model 5050 Timing Problem


Actually,timing of needle vs, shuttle is not very easy job several factor you should check on.There is belt ot sometime a shafting with worm gear and helical gear under machine w/c drive the shuttle with the bobbins in timing order,Any one of them is present on the timing adjustment can be done by releasing the belt or the helical gear,besure machine is unplug then set all mechanism on low dead center meaning the needle move to utmost lower position catching this by the shuttle and bobbins at center position.No motion applied if this was set up,engage the belt with pulley and the bobbins link holder tigh allenscrew besure the needle is lower dead center at the center of shullle bobbins catching needle without motion when setting back at original position.If this was made manually move it on handwheel going up and side down the needle gradually if the needle move freely several time and it was catching this by the shuttle hook bobbins.if ok put thread bobbins and upper thread dial tension with the needle.Move machine on handwheel try to catch the bobbins thread,If this so your machine is ready to sew again if problem occurs on alignment repeat adjustment on perpect alignment,besure all parts on upper casing of machine specially two drive gear are in normal alignment.

Mar 15, 2009 | Singer 5050 Mechanical Sewing Machine

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