13
UPPER SHAFT WORM
GEAR
SETSCREW
(2PCS.)
2–3 MM
MECHANICAL ADJUSTMENT
NEEDLE SWING
TO CHECK:
ADJUST THE NEEDLE SWING ACCORDING TO THE FOLLOWING PROCEDURE, IF THE
NEEDLE BAR STARTS MOVING SIDEWAYS WHILE THE NEEDLE IS IN THE FABRIC AT SEWING
THE ZIGZAG PATTERN (WITH MAXIMUM ZIGZAG WIDTH).
ADJUSTMENT PROCEDURE:
1. SET THE PATTERN SELECTOR DIAL WITH MAXIMUM ZIGZAG WIDTH, AND REMOVE THE T
TOP COVER (SEE PAGE 6).
2. LOOSEN TWO SETSCREWS.
3. ADJUST THE NEEDLE SWING BY TURNING THE HANDWHEEL, WHILE HOLDING THE
WORM SO AS NOT TO ROTATE IT, UNTIL THE NEEDLE SWING STARTS 2–3 MM ABOVE
THE NEEDLE PLATE AFTER THE NEEDLE HAS COME OUT OF THE RIGHT SIDE OF THE
NEEDLE HOLE.
4. TIGHTEN TWO SETSCREWS.
5. MOUNT THE FRONT COVER.
NOTE:
AFTER ADJUSTING THE NEEDLE SWING, CHECK THAT THE UPPER SHAFT WORM AND
GEAR ROTATE SMOOTHLY WITHOUT ANY BACKLASH BETWEEN THEM.
Summary of Contents for NH15
Page 1: ...1 SERVICE MANUAL MODEL NH15 PARTS LIST...
Page 23: ...23 WIRING 1 WIRING FOR MACHINE SOCKET UNIT L M M MOTOR L LAMP M L 120V 240V...
Page 34: ...34 MODEL NH15 PARTS LIST 1 2 3 4 4 5 6 7 8 9 10 11 12 13 14 8 4 15 16 17 8 8 18 19...
Page 38: ...38 MODEL NH15 PARTS LIST 1 2 3 9 5 8 6 7 4...
Page 40: ...40 MODEL NH15 PARTS LIST 2 8 1 4 5 7 6 3 9 10 11...
