What should I do before adding fuel to the Trailblazer 325?
Stop the engine and let it cool off before checking or adding fuel. Do not add fuel while smoking or if the unit is near any sparks or open flames, and do not overfill the tank — allow room for fuel to expand. (Page 7)
From the official Miller Trailblazer 325 Portable Welder Generator manual, page 7
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