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Problem
8. Needle breaks
Is the material being pushed or pulled with excessive force during sewing?
Is the needle properly installed?
If it is incorrect, install the needle correctly.
Is the needle bent, is the needle tip broken, or is the needle hole blocked?
Replace the needle.
Is the needle and feed timing correct?
Adjust the needle and feed timing.
Is the needle and rotary hook timing correct?
After adjusting the needle bar height, adjust the needle and rotary hook
timing.
Is the needle guard position correct?
Adjust the position of the needle guard.
Quick reverse sewing, start backtacking and end backtacking <-705/707 speci-
fications>
Is the needle down stop position correct?
Adjust the needle down stop position.
Caution
It is extremely dangerous to leave any pieces of broken needle stick-
ing in the material. If the needle breaks, searh for all pieces until the
whole of the needle is found again.
Furthermore, we recommend that through steps be taken to account
for such needles to comply with product liability regulations.
LS2-B891, LT2-B892
Possible cause
17. TROUBLESHOOTING
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