Singer 321C 131M-04 Instruction Manual page 36

Looperlink
Upper Looper
Looperlink holder
Components
Thickness washer
Upper looper shaft
Big washer
Upper looper shaft rear bushing
Upper looper shaft front bushing
Upper looper shaft oil seal
Upper looper shaft crank
Upper looper shaft bar
Connecting rod shaft pin
12 Washer
13 Oil wick
14
Upper looper slide block --
15 Oil felt
16 Oil felt
17 Thread tube
18 Screen oil plate
19 Felt plate
20 Thread holder snap plate
21 Upper looper shaft slide bar bracket
22 Thread guide
23 Oil wick
24 Screw
25 Thread amount regulating plate
26 Upper looper thread guard
27 Upper looper shaft thread plate
28 Screw
29 Upper looper set screw
Upper looper
Upper looper crank
Upper looper crank
32 Screw
33 Screw
34 Upper looper crank screw
35 Washer
36 Link pin set screw
37 Hexagon socket screw
38 Upper looper shaft screw
39 Thread guide screw
40 Screw
41 Thread guide screw
42 Thread guide washer
High Speed Overlock Machine | Instructions Manual and Parts List 33