FAULTS AND REMEDIES (SEWING MACHINE)
Some of the common defects related to sewing and the sewing machine, the possible causes, and the best possible corrective actions associated with these are given below. Defect : The machine does not feed the material. Possible causes (i) The stitch length has been set to zero. (ii) The presser foot pressure is too low. (iii) Feed dog is lowered. (iv) Threads are knotted under the fabric. Corrective action (i) Set the proper stitch length. (ii) Set pressure of presser foot. (iii) Raise feed dog. (iv) Remove fabric and knotted threads. Then again place the fabric properly. (v) Place both threads back under the presser foot before starting to sew. Defect: Machine running heavily. Possible causes (i) Dust or lint clogging under the feed dog. (ii) Insufficient oiling. (iii) Thread caught in the shuttle. (iv) Machine not used for sometime with the result that the parts have jammed. Corrective action (i)...