30
Zigzag Sewing Machine | Instruction Manual and Parts List
Troubleshooting
Whenever sewing difficulty is encountered, check and make adjustments as follows.
*** If you still have difficulty in sewing even after making adjustments,
contact your nearest Service Center.
Problem Possible Causes Possible Solutions
1. Is machine properly threaded 1. Correct needle threading
2. Are thread guides or tension disc area lint-free 2. Remove lint & fluff in bobbin case & hook
3. Is needle-thread tension too tight 3. Adjust needle thread tension
4. Is needle bent or has a blunt point 4. Insert new needle
5. Is needle inserted correctly 5. Insert needle correctly
6. Is needle the correct size for thread & fabric 6. Select proper needle size & thread
7. Is poor quality thread 7. Change the thread
1. Is bobbin threading correct 1. Correct bobbin threading
2. Is thread tangled or caught 2. Untangle thread from bobbin case & hook
3. Is thread tension correct 3. Adjust needle & bobbin case thread tension
4. Does bobbin rotate smoothly 4. Check whether bobbin thread is wound correctly
1. Is needle inserted correctly 1. Insert needle correctly
2. Is needle bent or has blunt needle point 2. Insert new needle
3. Is size of needle & thread suitable for fabric 3. Select proper needle size & thread
4. Is threading correct 4. Correct needle threading
1. Is needle installed wrong 1. Install needle correctly
2. Is needle bent 2. Replace needle
3. Is needle the correct size for the fabric 3. Select proper needle & thread for fabric
4. Is needle clamping screw loose 4. Tighten needle set screw
5. Is the fabric pulled while sewing 5. Do not pull fabric while sewing
1. Is feed regulating dial properly adjusted 1. Lengthen stitch length by feed regulating dial
2. Is presser foot pressure adjusted properly 2. Adjust correct presser toot pressure
1. Is needle threading correct 1. Correct needle threading
2. Is needle point blunt 2. Replace needle
3. Is thread tension too tight 3. Adjust needle tension properly
1. Is there any lint or fluff on feed dog 1. Remove lint & fluff from feed dog
2. Is there any lint in rotating hook 2. Remove lint & fluff from rotating hook
1. Are electrical plugs properly connected 1. Turn on power switch
2. Is power & light switch turned on 2. Connect plug to power source
Fabric fails to
feed
Fabric puckers
Rotating heavy
noise
Machine fails to
start
Needle thread
breaks
Bobbin thread
breaks
Skip stitches
Needle break
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