1
8
High Speed Flat Bed Interlock Sewing Machine
|
Instruction Manual and Parts List
Adjustment Dimensions
Troubleshooting
Needle Gauge
Size (mm)
5.6
8.5
8.3 ~ 8.7
8.3 ~ 8.7
4.5 ~ 5.0
17.0
0.8 ~ 1.2
6.4
8.1
2.8 ~ 3.1
8.3 ~ 8.7
4.5 ~ 5.0
17.0
0.8 ~ 1.2
6
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. Change the needle
4. Wrong relation with needle guards
4. Readjust the needle guard
5. Wrong relation with looper
5. Readjust the looper
6. Needle doesn’t center the needle slot of needle plate
or presser foot
6. Readjust the needle plate or 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. Rethread the machine correctly
4. Thread tension is too strong
4. Readjust the thread tension unit
5. Needle is installed wrong
5. Install needle correctly
6. Thread stand installed wrong
6. Install thread stand correctly
7. Overheat of the needle
7. Fill in the silicon oil and/or readjust the needle guard
8. Thread disc or guide is burred
8. Grind off, polish or replace by a new part
9. Wrong relation of needle and looper
9. Readjust needle and looper relation
10. Needle, looper, needle plate and guide are burred
10. Grind off, polish or replace by a new part
Skip stitches
1. Wrong relation of needle and looper
1. Readjust needle and looper
2. Wrong threading
2. Rethread the machine correctly
3. Needle is installed wrong
3. Install needle correctly
4. Inadequate thread tension
4. Readjust the thread tension nuts
5. Looper point is damaged
5. Replace by a new part
6. Needle is bended
6. Change the needle
7. Wrong installation of needle guard
7. Install needle guard correctly
