CONTENTS
WHAT TO DO WHEN ............................................................................................... 1-2
SERVICE ACCESS
Face plate ............................................................................................................. 3
Belt cover .............................................................................................................. 3
Bed base plate ...................................................................................................... 3
Front cover ............................................................................................................ 4
Rear cover ............................................................................................................. 5
MECHANICAL ADJUSTMENT
Upper thread tension dial ....................................................................................... 6
Bobbin thread tension ............................................................................................ 7
Presser bar height and alignment ........................................................................... 8
Needle swing ......................................................................................................... 9
Needle drop ......................................................................................................... 10
Height of feed dog ............................................................................................... 11
Clearance between needle and hook (No.1) ......................................................... 12
Clearance between needle and hook (No.2) ......................................................... 13
Needle bar height ................................................................................................ 14
Hook timing ......................................................................................................... 15
Feed balance on stretch stitch .............................................................................. 16
Buttonhole feed balance ....................................................................................... 17
Bar-tack feed of buttonhole .................................................................................. 18
Disengagement of cam follower ........................................................................... 19
Buttonhole function ............................................................................................... 20
Motor belt tension ................................................................................................ 21
WIRING ...................................................................................................................... 22
Содержание JF1018S
Страница 1: ...SERVICING MANUAL Model JF1018S...
Страница 24: ...22 WIRING...