2. Problem: NEEDLE THREAD BREAKAGE
CAUSE REMEDY
1. Excessive tension in needle
thread
Use stronger thread or adjust tension
2. Thread fraying at needle Use finer thread or coarser needle
3. Thread trapped at thread guide Re guide the thread properly
4. Thread trapping at the base of
cone
Reduce cone stand height to avoid vibration which can
cause thread trapping
5. Snarling before tension disc. Increase thread guides and reduce disc tension.
6. Improper off winding from cone
The overhead guide should be directly above cone or the
thread package. Also ensure that thread package
shouldn’t get tilted during off winding.
7. Sharp edges on throat plate,
hook point, needle guard, bobbin
needle groove or eye
Polish rough edges, replace. Replace needle, use better
quality.
8. Excessive needle heat, groove
or eye blocked with melted fabric.
Change to better needle or throw compressed air to cool
down the needle.
3. Problem :SKIPPED STITCHES
CAUSE REMEDY
1. Failure of needle to enter loop at
correct time
Check needles is inserted and aligned correctly. Machine
clearance and timings.
2. Needle deflection or bent needle Replace the needle
3. Thread loop failure due to
incorrect needle size for thread size
Change needle size in accordance with thread size.
Kindly refer to recommended needle numbers against
specified articles.
4. Incorrect sewing tension in the
needle
Re adjust the thread tension
5. Thread loop failure due to
incorrect setting of thread control
mechanism
Reset to standard and check loop formation through jog
mechanism.
6. Flagging of fabric due to poor
presser foot control
Re adjust presser foot pressure
4. Problem : BOBBIN THREAD BREAKAGE
CAUSE REMEDY
1. Bobbin tension too light Adjust bobbin case tension by turning screw.
2. Badly wound thread on bobbin Check bobbin winder alignment and adjust it properly.
3. Bobbin case not fitted correctly Check size / type of bobbin check bobbin case
4. Sharp edges on bobbin case
Polish edges and contact surfaces. Change bobbin
case if necessary.
5. Problems : UNBALANCED VARIABLE
STITCHING
CAUSE REMEDY
1. Improper thread tension Increase thread tension.
2. Unbalanced thread
check for snarling; opt for better quality
thread
3 Variable tensions due to poor quality thread
Change to better quality thread with consistent
quality.
4. Incorrect threading Re-guide the thread on machine.
5. Poor fabric feed control Increase presser foot pressure
6. Differential fabric feed Improve fabric feed mechanism.
6. Problem : STAGGERED STITCHING
CAUSE REMEDY
1. Incorrect needle to thread size relationship
Change needle or thread size as appropriate.
Kindly refer to recommended needle size
against specified articles.
2. Deflected or blunt needle point Change the needle.
3. Needle vibrating or deflecting
Increase needle size or change to a reinforced
or tapered needle.
4. Feed dog sway Tighten feed dog.
5. Poor and variable control Reset presser foot.
