3
CONDITION
CAUSE
HOW TO FIX
REFERENCE
3. BREAKING
1. INITIAL SEWING SPEED IS
START WITH MEDIUM SPEED.
UPPER
TOO FAST.
2. THREAD PATH IS
USE THE PROPER THREAD
INCORRECT.
PATH.
3. NEEDLE IS BENT OR DULL.
REPLACE WITH A NEW NEEDLE.
4. UPPER THREAD TENSION IS ADJUST UPPER THREAD
TOO STRONG.
TENSION CORRECTLY.
5. NEEDLE SIZE IS
USE APPROPRIATE NEEDLE
INAPPROPRIATE FOR
FOR FABRIC AND THREAD
FABRIC.
IN USE.
6. NEEDLE EYE IS WORN.
CHANGE THE NEEDLE.
7. NEEDLE HOLE IN NEEDLE
REPAIR THE HOLE OR
PLATE IS WORN OR BURRED. REPLACE THE NEEDLE PLATE.
4. BREAKING
1. INCORRECTLY THREADED
THREAD BOBBIN CORRECTLY.
BOBBIN
BOBBIN.
2. TOO MUCH THREAD IS
ADJUST THE POSITION OF
ON THE BOBBIN.
STOPPER.
3. LINT IS STUCK INSIDE THE
CLEAN THE SHUTTLE.
BOBBIN HOLDER.
4. THREAD QUALITY IS
CHANGE TO A HIGHER QUALITY
TOO LOW.
SEWING THREAD.
5. THREAD IS JAMMING
CLEAR OUT THE JAMMING
AROUND THE BOBBIN.
THREAD.
5. NEEDLE
1. NEEDLE IS HITTING THE
SEE MECHANICAL
P.20
BREAKS
NEEDLE PLATE.
ADJUSTMENT “NEEDLE
POSITION.”
2. NEEDLE IS BENT OR WORN. CHANGE THE NEEDLE.
3. NEEDLE IS HITTING THE
SEE MECHANICAL
P.18
SHUTTLE.
ADJUSTMENT “NEEDLE
CLEARANCE TO SHUTTLE.”
4. THE FABRIC MOVES WHILE SEE MECHANICAL
P.11
THE NEEDLE IS PIERCING
ADJUSTMENT “NEEDLE
IT, OR THE NEEDLE ZIGZAGS SWING.”
WHILE IN FABRIC.
5. FABRIC IS BEING PULLED TOO GUIDE THE FABRIC GENTLY
STRONGLY WHILE SEWING. WHILE SEWING.
THREAD
THREAD
Содержание 4052lx
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