Kenmore 16677 Service Manual - Page 16

TO ADJUST THE CLEARANCE BETWEEN THE NEEDLES AND THE LOWER LOOPER/NEEDLE GUARDS (1 of 3) CORRECT SETTING: BOTH RIGHT AND LEFT NEEDLES SHOULD HAVE AN EQUAL CLEARANCE FROM THE FRONT EDGE OFTHE NEEDLE HOLES ON THE NEEDLE PLATE. THE STANDARD CLEARANCE BETWEEN THE LEFT AND RIGHT NEEDLE AND THE TIP OF THE LOWER LOOPER IS 0 MM TO 0.05 MM. THE STANDARD CLEARANCE BETWEEN THE NEEDLE AND THE REAR NEEDLE GUARD IS 0 MM TO 0.2 MM. THE ABOVE STANDARD CLEARANCE ALLOWS THE NEEDLE TO SLIGHTLY TOUCH THE FRONT NEEDLE GUARD. TO ADJUST: 1. REMOVETHE LOOPER COVER UNIT, FACE PLATE UNIT, BACK COVER UNIT, TOP COVER, FRONT COVER UNIT, PRESSER FOOT AND NEEDLES. 2. BEFORE LOOSENING SETSCREW (C), ATTACH THE NEEDLE GAUGE #787-G02 TO PREVENT CHANGE OF NEEDLE BAR HEIGHT DURING THE ADJUSTMENT. ATTACH TWO #11 NEEDLES ON THE NEEDLE CRAMP. LOOSEN SETSCREW (C). ADJUSTTHE CLEARANCES BETWEEN NEEDLES AND THE FRONT EDGE OFTHE NEEDLE HOLES OF THE NEEDLE PLATE EQUAL BYTURNING THE NEEDLE BAR IN THE (D) OR (E) DIRECTION. KEEP PUSHING UP THE NEEDLE BAR TO PREVENT CHANGE OF NEEDLE BAR HEIGHT WHILE ADJUSTING. RETIGHTEN SETSCREW (C) AND REMOVE THE NEEDLE GAUGE. NEEDLE CLAMP SETSCREW (C) NO CLEARAN( NEEDLE GAUGE (787-G02) (D) NEEDLE BAR LOWER NEEDLE(L _- (E) / NEEDLE NEEDLE(R) 4 EOUALCLEARAN LOWER LOOPER 14