Trouble shooting guide
Problem
Possible cause
Solution
Reference pages
thread breaks
thread tension is too tight
for thread used.
the machine is not threaded
correctly.
needles are incorrectly
inserted.
reduce thread tension.
Check the threading.
insert needles fully into needle
clamp with flat side to the
back.
13
8, 9, 10 and 11
7
needles break
needles are bent, blunt or the
points are damaged.
needles not inserted
correctly.
Fabric was pulled while
sewing.
replace the needles.
insert needles fully into
needle clamp with flat side
to the back.
guide fabric gently with both
hands.
7
7
12
skipped stitches
needles are bent or blunt.
Wrong needles used.
replace the needles.
use system hax1 (130/705h)
needles.
7
7
poor stitch formation
thread is not wound correctly
round tension dials.
Check threading.
8, 9, 10 and 11
seams flute or ware (knits)
Differential feed is set
incorrectly.
Fabric was pulled while
sewing.
adjust differential feed
between n and 8 “ “
15
seams pucker
Differential feed is set incor-
rectly
adjust differential feed
between n and 5 “ “
15
Fabric edges curl
too much fabric in the stitch
formation.
reduce cutting width, knife
to the left.
14
thread loops are loose
too little fabric in the stitch
formation.
increase the cutting width,
knife to the right.
14
Machine does not sew
Cord not plugged in correctly.
Main switch not on.
Check plug.
switch machine on “
1
“.
5
18
E
N
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Li
S
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