Jack A2 Manual Pdf Jun 2026
The top tension is likely too tight, or the thread quality is poor. Check the rotary hook area for sharp burrs caused by needle strikes.
Route thread from the stand through the small tension disc near the winder, wrap it around the bobbin clockwise a few times, and push the latch forward.
Before operating the machine, it is important to understand its mechanical limits and electrical requirements. High-speed, 1-needle, Lockstitch Machine
Pass the thread through the top guide bar down to the small tension disc on the bobbin winder mechanism.
Check if the needle is bent, blunt, or inserted backward. Ensure the flat side of the needle shank faces to the right.
Toggles between "Needle Up" (needle stops out of the fabric for easy removal) and "Needle Down" (needle stops in the fabric for easy pivoting at corners).
