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Index
Contents ..................................................................................Page
3
1 Adjustment ...........................................................................................................................4
1.01 Tools, gauges and other accessories for adjusting ...............................................................4
1.02 Abbreviations .........................................................................................................................4
1.03 Explanation of the symbols ....................................................................................................4
1.04 Adjusting the basic machine ..................................................................................................5
1.04.01 Positioning the feed dog across the direction of sewing .......................................................5
1.04.02 Positioning the feed dog in the direction of sewing ..............................................................6
1.04.03 Height of the bottom feed-dog .............................................................................................7
1.04.04 Pre-adjusting the needle height .............................................................................................8
1.04.05 Centering the needle in the needle hole ................................................................................9
1.04.06 Lifting motion of the bottom feed-dog. ................................................................................ 10
1.04.07 Driving motion of the bottom and top feeds ........................................................................ 11
1.04.08 Hook-to-needle clearance, needle rise, needle height and needle guard ............................ 12
1.04.09 Top-feed stroke .................................................................................................................... 14
1.04.10 Lifting motion of the top feed ............................................................................................. 15
1.04.11 Bobbin-case opener ............................................................................................................. 16
1.04.12 Safety clutch ........................................................................................................................ 17
1.04.13 Needle thread tension release ............................................................................................. 18
1.04.14 Bobbin winder ...................................................................................................................... 19
1.04.15 Presser-foot pressure ...........................................................................................................20