Brother International 3034D Users Manual - English and Spanish - Page 28
Troubleshooting
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CHAPTER 6 TROUBLESHOOTING This sewing machine is designed for trouble-free operation. However, the following chart indicates trouble which may occur if basic adjustments are not made properly. Trouble 1. Does not feed Cause Presser foot pressure too loose Remedy Turn the pressure adjustment screw clockwise to increase the presser foot pressure. (See page 9.) 2. Needles break 1. Needles bent, or needle tip blunt Replace with new needle. (See page 13.) 2. Needles incorrectly installed Install needles correctly. (See page 13.) 3. Threads break 3. Material pulled forcibly 1. Improper threading 2. Thread tangled Do not press or pull material too hard when sewing. Thread correctly. (See pages 15-18.) Check spool pin, thread holders, etc. and remove tangled thread. 3. Thread tension too tight 4. Needles incorrectly installed 5. Wrong needle used Adjust the thread tension. (See pages 10-12.) Install needles correctly. (See page 13.) Use correct needle Schmetz 130/705H - suggested (See page 13.) 4. Skipped stitches 1. Needle bent, or needle tip blunt Replace with new needle. (See page 13.) 2. Needle incorrectly installed Install needle correctly. (See page 13.) 3. Wrong needle used 4. Improper threading Use correct needle. Schmetz 130/705H - suggested (See page 13.) Thread correctly. (See pages 15-18.) 5. Stitches are not uniform 6. Fabric is puckered 5. Presser foot pressure too loose Thread tensions are not adjusted properly 1. Thread tension too tight Turn the pressure adjustment screw clockwise to increase the presser foot pressure. (See page 9.) Adjust the thread tension. (See pages 10-12.) Decrease thread tension when sewing lightweight or fine material. (See pages 10-12.) 2. Improper threading or thread tangled Thread correctly. (See pages 15-18.) 26