... 86,REFGB 10069.1-1988Measurement of airborne noise emitted by rotating electrical machinery and the noise limits--Engineering ... changed properly with major structure unchanged. The generators are powered by LF168FA, LF168FB, LF170F, F173F, LF177F, LF182F, LF188F, ... persons who are not qualified to operate the Generator are strictly forbidden to operate this Generator. GEGO 5500 inverter generator