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SEWINGMACHINEDIV.20 MODEL385.19001890
CONDITION
4, BREAKING
BOBBIN
THREAD
5. NEEDLE
BREAKS
CAUSE
1. INCORRECTLYTHREADED
BOBBINHOLDER,
2. TOOMUCHTHREADIS
WOUNDONTHEBOBBIN.
3. LINTISSTUCKINSIDETHE
BOBBINHOLDER.
4. THREADQUALITYISTOO
LOW.
5. THREADISJAMMING
AROUNDTHEBOBBIN.
1. NEEDLEISHITTINGTHE
NEEDLEPLATE.
2. NEEDLEISBENTORWORN.
3. NEEDLEISHITTINGTHE
SHUTTLE.
.
,
.
17.
THE FABRIC MOVES WHILE
THE NEEDLE IS PIERCING IT,
OR THE NEEDLE ZIGZAGS
WHILE IN FABRIC.
FABRIC ISBEING PULLED
TOO STRONGLY WHILE
SEWING.
THE NEEDLE THREAD
TENSION ISTOO TIGHTE.
IN EMBROIDERY SEWING,
THE PATTERNISBEING SEWN
OVER ANOTHER PATTERN.
HOW TO FIX
THREAD BOBBIN HOLDER
CORRECTLY.
ADJUST THE POSITION OF
STOPPER.
CLEAN THE SHUTTLE.
CHANGE TO A HIGH QUALITY
SEWING THREAD.
CLEAR OUT THEJAMMING
THREAD.
SEEMECHANICAL
ADJUSTMENT "NEEDLE
POSITION".
CHANGE THE NEEDLE.
SEEMECHANICAL
ADJUSTMENT "CLEARANCE
BETWEENNEEDLE AND
HOOK".
' SEEMECHANICAL
ADJUSTMENT "UPPER SHAFT
SHIELD PLATEPOSITION".
GUIDE THE FABRIC GENTLY
WHILE SEWING.
SEEMECHANICAL
ADJUSTMENT "NEEDLETHREAD
TENSION,'
LEAVE SUFFICIENTSPACE
BEFORE SEWING SECOND
PAI_ERN.
REFERENCE
P. 15
E 69
P.25
P.30
:CONVENTIONA
_'WING ONLY)
P.34
CONVENTIONA
EWINGONLY)
P.39
(EMBROIDERY
ONLY)
9
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