Singer 191D-20 Instruction Manual - Page 25

Troubleshooting - w stand

Get Singer 191D-20 PDF manuals and user guides View all Singer 191D-20 manuals
Add to My Manuals
Save this manual to your list of manuals

Page 25 highlights

Troubleshooting Problems Possible Causes Possible Solutions Needle break Thread break Skip stitches Loosen stitches Wrinkled stitches 1. Needle is installed wrong 2. Wrong needle type or size 3. Needle is bended 4. Wrong relation with rotary hook 5. Needle doesn't center the needle hole of throat plate or presser foot 1. Low quality thread 2. Thread is thicker than needle hole 3. Wrong threading 4. Thread tension is too strong 5. Needle is installed wrong 6. Thread stand installed wrong 7. Thread tension disc, thread guide, needle, hook point and needle plate are burred 8. Wrong relation with rotary hook 1. Wrong relation of needle and hook point 2. Wrong threading 3. Needle is installed wrong 4. Inadequate thread tension 5. Hook point is damaged 6. Needle is bended 1. Wrong threading 2. Thread is thicker than needle hole 3. Inadequate thread tension 4. Wrong setting of needle and hook point 1. Thread tension is too strong 2. Take-up spring is too strong 3. Inadequate pressure of presser foot 4. Inadequate height of feed dog 5. Needle is too thick 1. Install needle correctly 2. Use proper needle for fabric and thread 3. Replace needle 4. Readjust the rotary hook 5. Readjust the needle plate and presser foot 1. Change the thread 2. Use proper needle for fabric and thread 3. Rethreaded the machine correctly 4. Readjust the thread tension nut 5. Install needle correctly 6. Install thread stand correctly 7. Grind off, polish or replace by a new parts 8. Readjust needle and hook point relation 1. Readjust needle and hook point 2. Rethread the machine correctly 3. Installed needle correctly 4. Readjust the thread tension nut 5. Replace by a new part 6. Replace needle 1. Rethread the machine correctly 2. Use proper needle for fabric and thread 3. Readjust the thread tension nut 4. Readjust needle and hook point 1. Readjust the thread tension nut 2. Readjust the take-up spring 3. Readjust the presser foot pressure 4. Readjust the feed dog 5. Use proper needle for fabric and thread High Speed Straight Lockstitch Sewing Machine | Instruction Manual and Parts List 22

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15
  • 16
  • 17
  • 18
  • 19
  • 20
  • 21
  • 22
  • 23
  • 24
  • 25
  • 26
  • 27
  • 28
  • 29
  • 30
  • 31
  • 32
  • 33
  • 34
  • 35
  • 36
  • 37
  • 38
  • 39
  • 40
  • 41
  • 42
  • 43
  • 44
  • 45
22
High Speed Straight Lockstitch Sewing Machine
|
Instruction Manual and Parts List
Troubleshooting
Problems
Possible Causes
Possible Solutions
Needle break
1.
Needle is installed wrong
1.
Install needle correctly
2.
Wrong needle type or size
2.
Use proper needle for fabric and thread
3.
Needle is bended
3.
Replace needle
4.
Wrong relation with rotary hook
4.
Readjust the rotary hook
5.
Needle doesn’t center the needle hole of throat plate
or presser foot
5.
Readjust the needle plate and presser foot
Thread break
1.
Low quality thread
1.
Change the thread
2.
Thread is thicker than needle hole
2.
Use proper needle for fabric and thread
3.
Wrong threading
3.
Rethreaded the machine correctly
4.
Thread tension is too strong
4.
Readjust the thread tension nut
5.
Needle is installed wrong
5.
Install needle correctly
6.
Thread stand installed wrong
6.
Install thread stand correctly
7.
Thread tension disc, thread guide, needle, hook point
and needle plate are burred
7.
Grind off, polish or replace by a new parts
8.
Wrong relation with rotary hook
8.
Readjust needle and hook point relation
Skip stitches
1.
Wrong relation of needle and hook point
1.
Readjust needle and hook point
2.
Wrong threading
2.
Rethread the machine correctly
3.
Needle is installed wrong
3.
Installed needle correctly
4.
Inadequate thread tension
4.
Readjust the thread tension nut
5.
Hook point is damaged
5.
Replace by a new part
6.
Needle is bended
6.
Replace needle
Loosen stitches
1.
Wrong threading
1.
Rethread the machine correctly
2.
Thread is thicker than needle hole
2.
Use proper needle for fabric and thread
3.
Inadequate thread tension
3.
Readjust the thread tension nut
4.
Wrong setting of needle and hook point
4.
Readjust needle and hook point
Wrinkled stitches
1.
Thread tension is too strong
1.
Readjust the thread tension nut
2.
Take-up spring is too strong
2.
Readjust the take-up spring
3.
Inadequate pressure of presser foot
3.
Readjust the presser foot pressure
4.
Inadequate height of feed dog
4.
Readjust the feed dog
5.
Needle is too thick
5.
Use proper needle for fabric and thread