4-36. DARNING SEWING MACHINE THREAD GUIDES MAINTENANCE - continued .
Disassembly. Remove thread guide felt (1) from thread guide (2).
Remove all buildups of grease, dirt, etc., by wiping with a wiping rag (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 open flame.
Clean using cleaning solvent (Appendix F, Item 8) and either a wiping rag (Appendix F
Item 2) or a medium bristle brush (Appendix F, Item 1). Do not clean thread guide felt.
Allow to dry.