Checking performance problems what to do – SINGER W1444 User Manual

Page 33

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CHECKING PERFORMANCE PROBLEMS WHAT TO DO

Problem

Probable cause

Possible correction

Fabric does not move

- Feed dog down
- Stitch length dial on 0
- Light presser foot pressure

- Raise feed dog

- Set dial between 1 and 4
- Increase pressure

Breaking needle

- Incorrect insertion of needle
- Bent needle

- Fabric is pulled
- Needle, thread and fabric

do not match

- Re-insert needle

- Replace needle
- Do not pull fabric

- Use correct needle and thread

Breaking upper thread

- Improper threading
- Tight upper thread tension

- Needle bent
- Nicks or burrs on stitch plate

opening

- Re-thread machine

- Loosen upper thread tension
- Insert new needle
- Polish of burrs or replace stitch

plate

Breaking bobbin thread

- Tight bobbin thread tension

- Improper threading
- Incorrect insertion of needle
- Lint or thread in shuttle

- Loosen bobbin thread tension

- Re-thread machine
- Re-insert needle
- Clean shuttle

Machine jamming

Knocking noise

- No oil
- Damaged needle
- Thread caught in shuttle

- Oil
- Replace needle

- Clean shuttle

Puckering

- Thread tension(s) too tight
- Presser foot pressure too tight

- Needle, thread and fabric do not

match

- Loosen tension(s)
- Adjust pressure
- Use correct needle and thread