CONTENTS
TROUBLESHOOTING ........................................................................ 1–3
SERVICE ACCESS
FACE COVER / BELT COVER ....................................................... 4
BASE PLATE .................................................................................. 5
FRONT COVER .............................................................................. 6
REAR COVER ................................................................................ 7
MECHANICAL ADJUSTMENT
TOP TENSION ................................................................................ 8
BOBBIN TENSION.......................................................................... 9
PRESSER BAR HEIGHT AND ALIGNMENT ................................ 10
NEEDLE SWING............................................................................11
NEEDLE DROP ............................................................................ 12
CLEARANCE BETWEEN NEEDLE AND HOOK (NO. 1) ............. 13
CLEARANCE BETWEEN NEEDLE AND HOOK (NO. 2) ............. 14
FEED DOG HEIGHT ..................................................................... 15
NEEDLE BAR HEIGHT ................................................................. 16
NEEDLE TIMING TO SHUTTLE ................................................... 17
BUTTONHOLE FEED BALANCE ................................................. 18
FEED BALANCE ON STRETCH STITCH .................................... 19
BARTACK FEED OF BUTTONHOLE ........................................... 20
DISENGAGEMENT OF CAM FOLLOWER .................................. 21
NEEDLE MOVEMENT FOR STRAIGHT STITCH ........................ 22
MOTOR BELT TENSION .............................................................. 23
WIRING ................................................................................................. 24