Fuel (in the Type 100) was ignited by a blank cartridge fired from a revolver mechanism in the flame gun, which held ten rounds. The fuel ejection handle fired a cartridge when it opened the fuel ejection valve. When the handle was returned to its closed position parallel to the tube, the flow of fuel stopped, and the magazine revolved to place a new cartridge in the firing position. The duration of a continuous discharge was 10 to 12 seconds with a maximum range of 22 to 27 meters.