TM 10-3930-659-20 5-19. ENGINE STARTING AID VALVE REPLACEMENT. This task covers: a. Removal b. Installation INITIAL SETUP: Equipment Conditions: Materials/Parts: •    Battery disconnect switch in OFF position (see • Two lockwashers TM 10-3930-659-10). •    Engine  starting  aid  line removed  (see para- References: graph 5-21). • TM 10-3930-659-10 •    Engine starting aid cylinder removed (see para- graph 5-20). General Safety Instructions: Tools/Test Equipment: • DO NOT perform this procedure near fire, flames, or sparks.  Use only in a well-ventilated area. •    General mechanic's tool kit (Item 44, Appendix F) WARNING Starting  fluid  is  toxic  and  highly  flammable.   Container  Is  pressurized  to  act  as  an expellent.  DO NOT heat container and DO NOT discharge starting fluid in confined areas or near an open flame.  Failure to follow this procedure may result in serious Injury to personnel. a. REMOVAL 1. Disconnect valve connector (5) from harness connector (6). 2. Remove two nuts (8), lockwashers (7), screws (4), four washers (3), and engine starting aid valve (2) from engine starting aid bracket (1).  Discard lockwashers. 5-56