Refueling hot engines and smoking while refueling can result in serious burns, often to large portions of the body. Always allow the mower to cool down before refueling, perhaps taking a rest period at the same time. Any gasoline which is spilled should be wiped up immediately. Always refuel outdoors and move away from the fueling location at least 25 feet before starting the engine to avoid igniting fuel vapors which may linger for some time. Another source of danger is that of carbon monoxide poisoning.
Carbon monoxide is a colorless, odorless and tasteless gas.
It is absorbed into the bloodstream through the lungs approximately 210 times easier than oxygen, leaving very little oxygen available for body tissues. Whenever an engine is started in an enclosed area, such as a garage, the danger of carbon monoxide poisoning exists. Symptoms include weakness, nausea, headache and visual problems. Any time you suspect that you or so eone else is a victim of carbon monoxide poisoning, move immediately to fresh air and call a doctor or poison control center for further advice. Always move outdoors before starting the engine so that the dangerous gases cannot accumulate.