Singer MX231 Instruction Manual page 9

Principal Parts of the Machine
1. Horizontal spool pin
2. Bobbin winder spindle
3. Hole for auxiliary spool pin
4. Handwheel
5. Power and light switch
6. Main plug socket
7. Bobbin thread guide
8. Upper thread guide
9. Face plate
10. Handle
11. Presser foot lifter
12. Foot speed control
13. Power cord
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