|
POSSIBLE CAUSES |
SOLUTION |
|
Needle is bent |
Replace needle |
|
Needle installation is incorrect |
Install needle correctly (see operator manual) |
|
Needle strikes the rotary hook |
|
|
Poor needle quality |
Replace needle |
|
Dull needle tip |
Replace needle |
|
Needle too small for fabric |
Replace with compatible needle |
|
When sewing caps, using flat needle plate instead of raised needle plate |
Install raised needle plate |
|
Needle strikes the needle plate |
