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TO ADJUST THE CLEARANCE BETWEEN
THE NEEDLE AND THE UPPER LOOPER
Correct setting:
When the upper looper meets with needle. Clearance should be :
-0.05 mm to +0.05 mm.
To adjust:
1: Turn the handwheel toward you with your hand to bring the needle just behind the upper looper in
downward travel.
2: Loosen the set screw, and adjust the clearance between the needlesand upper looper.
3: Tighten the set screw.
4: Check the clearance between the loopers.