![background image](/i/singer/168147/singer-heavy-duty-4423/h/singer-heavy-duty-4423-005.png)
2
1. Thread tension dial
2. Presser foot pressure adjustment
3. Thread take-up lever
4. Reverse sewing lever
5. Thread cutter
6. Presser foot
7. Needle plate cover
8. Removable extension table/ accessory storage
9. Three needle position dial
10. Bobbin stopper
11. Stitch width dial
12. Stitch length dial
13. Pattern selector dial
14. Automatic threader
15. One step buttonhole lever
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15
1
2
3
5
6
8
7
13
11
12
10
4
9
Principal Parts of the Machine