CONTENTS
SERVICE ACCESS
Face cover ..................................................................................................................... 2
Belt cover ....................................................................................................................... 3
Base plate ......................................................................................................................4
Bed cover .......................................................................................................................4
Front cover .....................................................................................................................5
Rear cover......................................................................................................................6
Free arm cover............................................................................................................... 7
MECHANICAL ADJUSTMENT
Top tension.....................................................................................................................8
Presser bar height and alignment.................................................................................. 9
Needle swing................................................................................................................ 10
Distribution of needle swing ..........................................................................................11
Needle clearance to hook ............................................................................................ 12
Backlash (lower shaft gear) ......................................................................................... 13
Needle bar height......................................................................................................... 14
Needle to hook timing .................................................................................................. 15
Feed dog height ........................................................................................................... 16
Button hole stitch balance............................................................................................ 17
Stretch stitch balance................................................................................................... 18
Zero feeding ................................................................................................................. 19
Buttonhole function (1)................................................................................................. 20
Button hole function (2)................................................................................................ 21
Motor belt tension ........................................................................................................ 22
PART REMOVAL AND REPLACEMENT................................................................................
Threader plate.............................................................................................................. 23
Wiring of terminal block ............................................................................................... 24
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