We currently have a computerized JUKI bartack and we had a needle break and now the presser foot is stuck in the down position. We have looked in the manual and cannot find any topic that covers this problem and are sort of in a dire situation as we are with a parachute team at the United States Military Academy in West Point, NY and have equipment that needs repairs using a bartack.
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Re: JUKI LK1900HS Broken machine
Sounds like it was part way through a cycle when it stopped.
Remove the needle, turn the power off and try turning the machine through a cycle by hand. If that does not solve the problem do the same again with the power on.
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regarding your inquiry about JUKI machine model DDL-8700 , first your machine type was what ? DDL-8700/SS ( for light to medium material , DDL-8700/HS ( for jeans and can use to sew light to medium lather, type of needle is DBx1, size for lather was 18 and you can use thread number #30 and #20. one more thing you want to change your presser foot to teflon presser foot ( please see attached photo for that presser foot you want to buy.
if need more information please ask
thanks and best regards
CAIRO - EGYPT
needle too small. cheap thread. needle not centered in slot of presser foot which will cause the thread to be sheared of when needle passes presser foot. burrs on hook under machine causesd by breaking needles. tilt machine and use emery paper to smooth hook. stroke in same direction as hook rotation. maybe too much top thread tension also.
1.the needle is damaged
2.the needle is not correctly inserted
3.wrong size needle for the fabric
4.the wrong foot is attached
5.the needle clamp screw is loose
6. Top tension is too tight
7. Machine could be out of time
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
Machine breaks needles
1.make sure you are using the right needle for your type of sewing machine.
Most machines can use generic Schmetz needles. There are cases where the machine will only use ones specified in the owners manual.
2.the presser foot may not be installed properly
3.use the correct needle for the type of fabric you are working with. To fine of needle on heavy fabric or to course a needle on silk or jersey can damage fabric.
4.let the feed dogs guide the fabric & the feed dogs will work with the presser foot .
5.the needle is not all the way in -push all the way up against the stop
Make sure you're using the correct foot for the stitch. Is this during sewing or embroidery? Take off the bobbin plate using the screwdriver and remove the bobbin. Make sure everything is clean under and around the shuttle. If you've ever broken a needle the tip might have fallen down into the mechanism and occasionally be jamming it.
My friend and I both have the Juki 98Q but on different frames - we were both having problems (needles breaking, thread getting tangled) we removed the thin metal thing inside the bobbin case and have had no problems since (over a year now!).