5-53. BUTTON SEWING MACHINE PULLEY STARTER AND TRIP BLOCK MAINTENANCE - continued.
(7) Remove two collar setscrews (16) and the shaft collar (17) from the shaft.
(1) 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 well-ventilated area and avoid
prolonged breathing of vapors. Keep away from open flame
(2) 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).
(3) Allow to dry.