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WORKING CIRCUMSTANCE 1. To reduce the risk of injury associated with exhaust fume inhalat i o n , d o n o t o p e r a t e i n unventilated area. The exhaust gases contain harmful carbon monoxide. 2. Avoid using the blower where stable footing and balance are not assured. 3. Never operate the machine in high wind, bad weather, potentially explosive atmosphere, when visibility is poor or in very high or low temperatures. (Our recommended use environment is below 40 degrees C (104 degrees F).) AVOI