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Crank assembly

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6.14 Chain Stitch Looper Components (1) No. Part No. 1 20705006 2 B08002 3 20704014 4 20703013 5 207S12003 6 30228008 7 20709017 8 207S13009 9 20628010 10 20628005 11 20710008 12 001027 13 20626017 14 20701034 15 S05018 16 20704015 17 S05018 18 20705008 19 20703013 20 207S12003 21 30228008 22 20702018 23 3052201700 24 XXXXXXXX 25 207Sl1028 26 20701035 27 207S20004 28 20728002 29 207S15001 Description Connection Needle bearing Crank Bushing Screw Washer Slider Screw Washer Spring washer Pin O ring Shaft Holder assembly Screw Crank assembly Screw Link Bushing Screw Washer Shaft Oil seal Chain stitch looper Screw Chain stitch looper holder assembly Screw Spacer Screw 3 thread 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 Qty 4 thread 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 5 thread 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 Ultra High Speed Overedge and Safety Stitch Machine | Instruction Manual and Parts List 49

Section	Page
Contents	2
1 Safety Instructions	4
1.1 Important Safety Instructions	4
1.2 For Safe Operation	5
2 Product Description and Machine Specification	6
2.1 Product Description	6
2.2 Machine Specification	7
2.3 Motor, Motor Pulley and V-Belt Specifications	8
3 Setup and Adjustment Instructions	9
3.1Table Cut-OutDiagram	9
3.2 Machine Installation	10
3.3 Lubrication and OilDrainage	12
3.4 Fill Silicon Oil to Reservoir	13
3.5 Needle Attachment (or Replacement)	13
3.6 Replacing Upper and Lower Knife	14
3.7 MachineThreading	15
3.7.1 EasyThreadingMethod	15
3.7.2ThreadingDiagram	15
3.8 Thread Tension Adjustment	16
3.9 Presser foot pressure	17
3.10 Adjusting the Differential Feed Rate	17
3.11 Stitch Length Adjustment	18
3.12 Parts Relation and Timing	19
4 Maintenance	20
4.1 Machine HeadCleaning	20
4.2 Oil Changeand FilterCleaning	20
4.3 SafetyInspection	20
5 Troubleshooting	21
6 Parts list	23
6.1 Machine Bed Frame Components	24
6.2 Machine Cover Components (1)	26
6.3 Machine Cover Components (2)	28
6.4 Crank shaft Drive Components	30
6.5 Thread Tension Components	32
6.6 Thread Guide and Thread Take-up Components (1)	34
6.7 Thread Guide and Thread Take-up Components (2)	36
6.8 Thread Guide and Thread Take-up Components (3)	38
6.9 Needle Bar Components (1)	40
6.10 Needle Bar Components (2)	42
6.11 Needle Plate and Needle Guard Components	44
6.12 Upper Looper Components	46
6.13 Lower Looper Components	48
6.14 Chain Stitch Looper Components (1)	50
6.15 Chain Stitch Looper Components (2)	52
6.16 Differencial Feed Components	54
6.17 Feed Dog Components	56
6.18 Knife Drive Components	58
6.19 Presser Foot Components	60
6.20 Lubrication Components (1)	62
6.21 Lubrication Components (2)	64
6.22 Silicon Oil Reservoir Components	66
6.23 Exclusive Parts List for 321K series	68
6.24 Thread Stand Components	70
6.25 Accessories	72
6.26 Machine Support Plate For Semi-Submerged Components	74
6.27 Specific Parts for 321D-251 Hand 321K-251H	75
6.28 Optional Parts	76
6.29 Back Latch Components	78
6.30 Vacuum Suction & AFL Device (Option parts)	80
ChainCutter DeviceComponents	82