1. The primary distinction between the sprayer pumps model 80 and 60 lies in their respective flow rates. 2. The numbers 80 and 60 signify the cubic centimeter (cc) ratings, indicating the volume of liquid the pumps can deliver per unit of time. 3. Before operating a sprayer pump, it is crucial to inspect the high-pressure piping, fittings, and nozzles for leaks. This precaution ensures that individuals are protected from direct contact with pesticides, preventing the risk of中毒 (poisoning). 4. During operation, it is essential to wear protective gear, such as long-sleeved clothing and a face mask, to ensure personal safety.