2
CONTENTS
WHAT TO DO WHEN ....................................................................................... 3-5
SERVICE ACCESS
FACE COVER ............................................................................................... 6
TOP COVER ................................................................................................. 6
BASE COVER ............................................................................................... 7
REAR COVER .............................................................................................. 8
FRONT COVER ............................................................................................ 9
MECHANICAL ADJUSTMENT
NEEDLE THREAD TENSION .................................................................... 10
BOBBIN TENSION ..................................................................................... 11
PRESSER BAR HEIGHT AND ALIGNMENT ............................................. 12
NEEDLE SWING ........................................................................................ 13
NEEDLE DROP POSITION ........................................................................ 14
CLEARANCE BETWEEN NEEDLE AND SHUTTLE ............................. 15-16
FEED DOG HEIGHT .................................................................................. 17
NEEDLE BAR HEIGHT .............................................................................. 18
NEEDLE TIMING TO SHUTTLE ................................................................. 19
BUTTONHOLE FEED BALANCE ............................................................... 20
DISTORTED PATTERN (MODEL NEXT 40, 30 ONLY) .............................. 21
ADJUSTING BUTTONHOLE LEVER POSITION ....................................... 22
DISENGAGEMENT OF CAM FOLLOWER ................................................ 23
MOTOR BELT TENSION ............................................................................ 24
WIRING ...................................................................................................... 25
PARTS LIST ................................................................................................ 26-43