Singer 20U-105C - Page 3

Contents
4
5
6
Maintenance 27
4.1 Machine Head Cleaning 27
4.2
4.3
Lubrication 27
Safety Inspection 27
Troubleshooting 28
Parts List 29
6.1
6.2
Face Plate, Arm Top Cover and Arm Side Cover Components 30
Thread Take-up, Arm Shaft and Handwheel Components 32
6.3
Needle Bar, Presser Bar and Needle Plate Components 34
6.4 Zigzag Triangular Cam and Hook Advancing Crank Components 36
6.5 Bight Amplitude and Bight L-C-R Position Components
6.6 Arm Shaft (upright) and Rotating Hook Drive Shaft Components 40
6.7 Hook and Bobbin Case Components 42
6.8 Feed Regulating Dial and Feed Reverse Lever Components 44
6.9 Feed Mechanism Components 46
Presser Bar Lifter and Thread Tension Components 48
Thread Stand Components 50
6.12 Accessories and Attachments 52
6.13
6.10
6.11
Belt Cover Components 54
38