(7) When weapon is to be used on a mission, fit ignition cylinder and ignition shield in place on nozzle end of barrel as described in Paragraph 18. _d. Maintenance of ignition head._ (1) _Servicing._ The ignition head should be cleaned and lubricated each time it is disassembled. (Par 49) (2) _Spring-case assembly._ If outer case rotates and inner case does not, and no spring action occurs, spring is broken and spring case should be replaced as a unit. Do not disassemble or repair this part. (3) _Trigger rod and lug._ When trigger is pulled all the way, end of trigger rod should extend 1/16 inch beyond lug on forward-facing surface of ignition-head body. If end of trigger rod is worn, replace rod. Lug on the ignition-head body should be approximately 7/32 inch high. If lug is worn or broken, replace ignition head body. [Illustration: Fig 57. Prying snap ring from ignition head to remove spring case.] [Illustration: Fig 58. Loosening set screws with wrench so ignition head may be lifted off barrel.] APPENDIX Section XVIII SHIPMENT AND STORAGE 77. SHIPMENT AND STORAGE. The flame thrower is shipped and stored in a wooden packing case (Fig 59), which measures approximately 34 inches by 23 inches by 19 inches. Cubage of the case is approximately 8-1/2 cubic feet. [Illustration: Fig 59. Opened packing chest showing flame thrower and other contents as received.] _a. Storage procedure._ After use and servicing (Pars 55 and 56), if the weapon is not to be promptly reused on another mission, it should be returned to the packing case. Before disconnecting the gun group from the tank group and storing the weapon, the ignition cylinder should be removed, the fuel discharged, and the pressure released. Operate fuel valve to release any residual pressure in the fuel tanks. The deflector tube must be removed from the safety head (Fig 11) to permit the tank group to fit into the chest. The deflector tube should be kept in the spare parts kit or tool kit until the next use of the weapon. The spare parts kit, the tool kit, the extra cans of cylinders, TM 3-376A, and the coupling plug (Fig 7) should remain in the chest except when they are being used. Wooden fittings hold the tank group in place, with the pressure tank up. The gun group is disconnected from the tank group and is kept with fuel hose connected to the gun on the gun mounting board in the chest. (Fig 10) _b. Rust prevention._ If the flame thrower, parts, and tools are to be stored for a considerable length of time, especially in a damp climate, all exposed metal surfaces should be covered with a rust-preventive compound. Store in a dry place. Section XIX LIST OF REFERENCES 78. REFERENCES. References pertaining to the care and use of flame throwers include: AR 850-20 Precautions in Handling Gasoline AR 850-60 Compressed Gas Cylinders; Safe Handling, Storing, Shipping, Using