Brand new troybilt 6250 watt generator can't find the neutral bond. Box was unopened when purchased. wiring is as fgollows----- blue from breaker to power on outlets and breaker for that outlet, gray to other outlet and breaker for outlet, red to all neutral on outlets with a black wire attached to end outlet going back into generator. 240 volt outlet has blue and gray power, green ground. all green grounds are where they should be with no jumper to neutral. With continuity test in neutral and ground no bell goes off. If black wire was grounded in windings i would think continuity test would make a tone. CAN'T FIGURE IT OUT HOW TO UNBOND NEUTRAL. Back cap of generator pulled off to take a look and green ground is grounded to generator case and then down below to frame. Can't find any place that neutral is bonded to ground. Generator is labeled bonded neutral. Any help would be appreciated