4-21. CLOTHING SEWING MACHINE THREAD GUIDES MAINTENANCE - continued.
Remove all buildup of grease, dirt, etc. by wiping with a rag, wiping (Appendix F, Item 2).
Cleaning solvent, Federal Specification P-D-680, is both toxic and flammable. Keep off skin.
Use only in a well-ventilated area and avoid prolonged breathing of vapors. Keep away from
If needed, clean using cleaning solvent (Appendix F, Item 8) and either a rag, wiping (Appendix
F, Item 2) or a medium bristle brush (Appendix F, Item 1).
Allow to dry.
Inspect hardware for damage.
Inspect the thread retainer for damage.
Inspect the thread guide for damage.
Inspect the thread eyelet for damage.
Repair. Repair of the thread guides is limited to the replacement of defective components.