Hello again Sorry for the delay, I'm not the swiftest with computers either! THe bobbin no longer hits the bobbin case and sews nicely in the sewing mode but the embroidery mode still makes a bobbin mess. :>( Karen
PS I didn't find any manual for my machine on that site.
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Open up the bobbin case and remove the bobbin and case. There may be something catching on the hook (random thread) that is preventing the motion. The bobbin case could be off-kilter as well. If that is not it, take the cover off the sewing head and see what is blocking the mechanical parts of the levers.
If you are talking about the bobbin case (housing), it may be inserted incorrectly. Remove it and put it in again, or the needle isn't seated correctly. Once the bobbin case is damaged, do not use it anymore or you will continue to have problems. If you mean the bobbin, change bobbins and see if you continue to have problems, as you might have the incorrect size.
when you turn the machine off and on again, that clears the computer and helps it start correctly.. but if there is a problem, when you continue sewing it will show up then check for the normal things like rethreading the machine top and bobbin new needle make sure the bobbin is inserted correctly into the bobbin case clean under the needle plate and in the bobbin area for lint
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.
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