Singer 321C - Table of Contents

Contents
1 Safety Instructions 1
1.1 Important Safety Instructions 1
1.2 Safe Operation 2
2 Product Description and Machine Specification 3
2.1 Product Description 3
2.2 Machine Specification 4
2.3 Motor, Motor Pulley and Belt 4
3 Mounting and Adjustment Instructions 5
3.1 Table Cut-Out Diagram 5
3.2 Machine Installation 6
3.3 Lubrification and Oil Drainage 8
3.4 Needle Attachment (or Replacement) 9
3.5 Machine Threading 9
3.6 Thread Tension Adjustment 10
3.6.1 Tension Nut Adjustment 10
3.6.2 Needle Thread Control 10
3.6.3 Looper Thread Control 11
3.6.4 Chain Looper Thread Cam Control 11
3.7 Adjusting the Differential Feed Rate 12
3.8 Stitch Length Adjustment 12
3.9 Parts Relation and Timing 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
4 Maintenance 16
4.1 Machine Head Cleaning 16
4.2 Oil Change and Filter Cleaning 16
4.3 Safety Inspection 16
5 Troubleshooting 17