Singer 257 M-55 - Table of Contents

1.1 Important Safety Instructions 1
1.2 Safe Operation 2
2.1 Product Description 3
2.2 Machine Specification 4
2.3 Motor, Motor Pulley and Belt 4
3.1 Table Cut-Out Diagram 5
3.2 Machine Installation 6
3.3 Lubrification and Oil Drainage 8
9
9
3.4 Needle Attachment (or Replacement)
3.5 MachineThreading
3.6 Thread Tension Adjustment 10
3.6.1 Tension Nut Adjustment 10
3.6.2 NeedleThread Control 10
3.6.3 LooperThread Control 11
3.6.4 Chain LooperThread Cam Control 11
3.7 Adjusting the Differential Feed Rate 12
3.8 Stitch Length Adjustment 12
3.9 Parts Relation andTiming 13
3.9.1 Needle and Needle Plate 13
3.9.2 Upper Looper (Spreader) and Needle 14
3.9.3 Lower Looper and Needle 14
3.9.4 Upper and Lower Loopers 15
3.9.5 Needle and Needle Guard 15
3.9.6 Chain Looper and Needle 15
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4.1 Machine Head Cleaning 16
4.2 Oil Change and Filter Cleaning 16
4.3 Safety Inspection 16