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11-6) The material is inappropriately 6-A) The needle hole of the throat Replace the current gauge with a new one having a smaller
stretched. plate is too large. diameter hole.
6-B) The thread relief on the back Use a presser with a smaller thread relief on the backside
side of the presser is too large. or without thread relief.
6-C) The parallel level of the presser Replace the presser, or loosen the presser bar holding
is inappropriate. screw and correct the needle entry and presser bend if
there is no needle entry.
6-D) The presser is floating. Adjust the clearance between the presser bar holder and
lifting plate.
11-7) Backlash exists in the moving 7-A) Irregular stitches occur due to Check whether there is a backlash and eliminate the back
direction. pitch fluctuations resulting from lash if necessary.
variation in the sewing speed.
11-8) The stroke of the thread take-up Move the arm thread guide rightward to reduce the thread
lever is too long. feeding with the thread take-up lever.
11-9) No reaction is observed from Use D1113126WA0.
the thread guide bar.
Trouble Case (1) Case (2) Check and Corrective measures
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