2
CONTENTS
WHA T 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