_c._ =If no additional shots are to be fired before refilling and recharging, open pressure-tank valve by turning handle counterclockwise.= Point the gun away from personnel and blow out the remaining fuel =and pressure=, if any, from the fuel tanks by squeezing the valve lever and grip safety until there is no further discharge. The trigger should not be used during this operation. =Then close the pressure-tank valve to prevent entrance of foreign matter into the pressure system.= _d._ (Superseded). Carefully remove tank group from the back. This may be done most easily by sitting or squatting with back to a tree stump, flat rock, packing box, or other object. Release the body and shoulder straps and ease tank group off the back. Avoid dropping equipment on the ground as this may damage it. * * * * * =31. IGNITION CYLINDER.= * * * * * _c. Packing._ Ignition cylinders are * * * each flame thrower. Fifty cans (100 ignition cylinders) are contained in each =ignition cylinder= packing box. =Wooden packing box with contents weighs approximately 50 to 55 pounds. Outside dimensions of the box are approximately 16-1/4 inches by 14-3/4 inches by 10-1/4 inches. Cubage is 1-3/12 cubic feet.= * * * * * =32. CHARGING PRESSURE TANK.= * * * * * _b. Charging from air compressor._ Compressor, air, gasoline * * * cylinders as well. Instructions for use of the compressor will be found in =TM 3-377=. * * * * * =Figure 23.= Charging two pressure tanks, using charging and filling lines, and cylinders of compressed air or nitrogen. =As many as four pressure tank and valve assemblies, on or off tank groups, can be charged at one time from cylinders coupled as shown in figure 24.= =33. PRECAUTIONS WHEN PRESSURE-CHARGING.= * * * * * _m._ (Added). Inspect carefully to be certain that no traces of grease, flame thrower fuel, oil, dirt, or other foreign matter are present in flame thrower pressure tanks, outlets of air compressor, connections, hose, or cylinders containing compressed air. _n._ (Added). Hands and tools must be free of oil or grease when charging or servicing flame thrower pressure systems. _o._ (Added). Discharge any remaining compressed air in flame thrower pressure tanks before recharging. _p._ (Added). If compressed air is to be used, and if any grease, oil, or flame thrower fuel is detected by sense of smell or sight within pressure tank and valve assemblies or cylinders, return tanks or cylinders for cleaning to the appropriate third-echelon maintenance agency of Chemical Warfare Service. =35.1 PEPTIZED FUELS= (Added). _a. Characteristics._ (1) Pour more readily than usual thickened fuels. (2) Give a larger diameter flame than thickened fuels. (3) Give longer effective ranges than liquid fuels.