TM 10-3930-659-20 5-20. ENGINE STARTING AID CYLINDER REPLACEMENT. This task covers: a. Removal b. Installation INITIAL SETUP: Equipment Conditions: Tools/Test Equipment: •    Battery disconnect switch in OFF position (see • General mechanic's tool kit (Item 44, Appendix F) TM 10-3930-659-10). • Left engine upper sideshield opened (see TM 10-  References: 3930-659-10). • TM 10-3930-659-10 •    Left engine lower sideshield removed (see para- graph 14-16). General Safety Instructions: •    DO NOT perform this procedure near fire, flames, or sparks.  Use only in a well-ventilated area. 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. Loosen clamp (1) and remove engine starting aid cylinder (2) from engine starting aid valve (4) and clamp. 2. Install cap (3) on engine starting aid valve (4). 5-58