Trouble shooting guide
Problem
Cause
Solution
Page
Fabric does not feed
evenly
・
Presser foot pressure is too low.
・
Adjust the presser foot pressure.
22
Thread breaks
・
The thread tension is too tight for thread
being used.
・
The machine is not threaded correctly.
・
Needles are not inserted correctly.
・
Wrong needles used.
・
Reduce the thread tension.
・
Check the threading.
・
Insert needles fully into the needle
clamp with flat side to the back.
・
Use needle system 130/705H.
21
13-19
11
11
Needle breaks
・
Needles are bent, blunt, points are
damaged.
・
Needles are not inserted correctly.
・
Fabric was pulled while sewing.
・
Replace needles.
・
Insert needles fully into the needle
clamp with flat side to the back.
・
Guide fabric gently with both hands.
11
11
-
Skipped stitches
・
Needles are bent or blunt.
・
Wrong needles used.
・
The presser foot pressure is too low.
・
Replace the needles.
・
Use needles of system 130/705H.
・
Increase the presser foot pressure.
11
11
22
Poor stitch forma-
tion
・
Thread is not wound correctly around
the tension dials.
・
Thread got caught.
・
Check if thread is lying between the
tension discs.
・
Check the threading path of each
thread.
12
13-19
Seam flute or wave,
especially when
sewing knits
・
Fabric was pulled while sewing.
・
The presser foot pressure is too tight.
・
The differential feed is not set correctly.
・
Guide fabric gently.
・
Reduce the presser foot pressure.
・
Adjust the differential feed to N-2.
-
22
23, 24
Seam pucker
・
The thread tension is too tight.
・
The differential feed is not set correctly.
・
Reduce the thread tension.
・
Adjust the differential feed to 0.7-N.
21
23, 24
Fabric edges curl
・
The thread tension is too tight.
・
Reduce the thread tension.
21
32
