How much fuel you use will depend on the size of the burning tip and your flame-adjustment setting. Typically, a 5-gallon gas tank will provide enough for 3 to 6 hours of burning. The Size of the Burning Tip Tip size is important, and you should consider the type of weeding you want to do. Remember, a 2,000 o F flame will kill prized garden plants just as easily as it will kill unwanted weeds. Flamers with these tips, sometimes called torch bells, send out a wider flame band than other models, allowing you to cover more area in less time.
Safety When used properly, flamers provide effective weed control.
If you're using a flamer with an extension hose, keep the flame away from both hose and tank. Though the flamer's handle doesn't get hot, the flaming tip does. Even after turning off the flame, keep the flamer away from people and combustible materials. Always be cautious when lighting the flamer. Follow the manufacturer's instructions exactly.