Brother ZM-850A Manuel D'instructions page 91

Problem
10. Broken needles
0469M
• Is the material being pushed or pulled with excessive force dur-
ing 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 rotary hook timing incorrect?
Adjust the height of the needle bar.
Adjust the clearance between the needle and the rotary hook.
Caution
• It is extremely dangerous to leave any pieces of broken
needle sticking in the material. If the needle breaks, search
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.
ZM-850A, 851A
12. TROUBLESHOOTING
12. FEHLERSUCHE
12. RESOLUTION DES PROBLEMES
12. LOCALIZACION DE AVERIAS
Possible cause
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