Kenmore 385.15202400 Service Manual page 8

SEWING MACHINE DIV.20 MODEL 385. 15208400
CONDITION
&BREAKING
UPPER
THREAD
4. BREAKING
BOBBIN
THREAD
5. NEEDLE
BREAKS
CAUSE REFERENCE
1. INITIAL SEWING SPEED IS
TOO FAST.
2. THREAD PATH IS
INCORRECT.
3. NEEDLE IS BENT OR DULL,
4. UPPER THREAD TENSION IS
TOO STRONG.
5. NEEDLE SIZE IS
INAPPROPRIATE FOR
FABRIC.
6. NEEDLE EYE IS WORN,
7. NEEDLE HOLE IN NEEDLE
PLATE IS WORN OR BURRED,
1.
2.
3.
4.
5.
6.
INCORRECTLY THREADED
BOBBIN CASE,
TOO MUCH THREADIS
AROUND ON THEBOBBIN.
LINT IS STUCK INSIDE THE
BOBBIN HOLDER,
THREAD QUALITYIS
TOO LOW.
THREADISJAMMING
AROUNDTHEBOBBIN.
BOBBINTHREADTENSIONIS
TOO STRONG.
1. NEEDLE IS HITTING THE
NEEDLE PLATE.
2. NEEDLE IS BENT OR WORN.
3. NEEDLE IS HITTING THE
HOOK RACE.
4.
5.
THE FABRIC MOVES WHILE
THE NEEDLE IS PIERCING
IT, OR THE NEEDLE ZIGZAGS
WHILE IN FABRIC.
FABRIC IS BEING PULLED TOO
STRONGLY WHILE SEWING.
HOW TO FIX
START WITH MEDIUM SPEED.
USE THE PROPER THREAD
PATH.
REPLACE WITH A NEW NEEDLE.
ADJUST UPPER THREAD
TENSION CORRECTLY,
USE APPROPRIATE NEEDLE
AND THREAD FOR FABRIC
IN USE.
CHANGE THE NEEDLE.
REPAIR THE HOLE OR
REPLACE THE NEEDLE PLATE.
THREAD BOBBIN CASE
CORRECTLY.
ADJUST THE POSITION OF
STOPPER,
CLEAN THE HOOK RACE.
CHANGETO A HIGH QUALITY
SEWING THREAD.
CLEAR OUTTHEJAMMING
THREAD,
ADJUST BOBBIN THREAD
TENSION CORRECTLY,
SEE MECHANICAL
ADJUSTMENT"NEEDLEDROP."
CHANGETHENEEDLE.
SEE MECHANICAL
ADJUSTMENT "CLEARANCE
BETWEEN NEEDLE AND HOOK".
SEE MECHANICAL
ADJUSTMENT "NEEDLE SWING".
GUIDE THE FABRIC GENTLY
WHILE SEWING.
P.11
P.12
P.15
P.16, 17
P.14
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