HC325_ES.book Page 49 Thursday, April 10, 2008 4:15 PM
Trouble chart
PROBLEM
Breaking lower
Thread not wound evenly on the bobbin or not drawn up
thread
correctly
Lower thread tension too tight
Lint is stuck in the bobbin case and inside the tension spring
Skipping stitches
Needle not fully inserted
Needle bent or blunt
Size or type of needle and thread not suitable for the material
Incorrect upper threading
Too much oil on the machine
Irregular stitches
Incorrect size of needle for the material
Upper thread tension is too loose
Incorrect lower thread tension
The material not fed
Pattern selection dial not set correctly
correctly
Feed teeth are down
Lint is stuck in the feed teeth
Noisy machine
Check the thread in shuttle, even the slightest amount of thread
inside the shuttle may cause noise or binding, use material like
tooth pick or cotton swab to clean
The material
Upper or lower thread tension is too tight
puckers
Stitch too long for material
Thread too thick
Incorrect threading of upper or lower thread
Breaking needle
Needle not correctly inserted
Needle bent
Needle clamp screw too loose
Upper thread tension too tight
Needle too fine for the material
Dials have been changed while the needle was down in the
material
❈ If trouble is still apparent in the machine, please contact where you purchased or our web.
site (Europe only).
Do not try to correct fault by yourself.
49
English
PROBABLE CAUSE
CORRECTION
P. 8, P. 12
P. 45 - 46
Remove lint and
fluff with a cleaning
brush
P. 47
P. 48
P. 52
P. 12
P. 44
P. 52
P. 17
P. 45 - 46
P. 53
P. 18
P. 48
P. 48
P. 17, P. 45 - 46
P. 53
P. 52
P. 12, P. 9
P. 47
P. 48
P. 47
P. 17
P. 52
P. 6