Anyone know if it is required to have the display plugged in to run the machine? I pulled mine out to have it repaired. Then fired up the engine no problem. It would not top out. I don't know if it was a fouled plug or because the display is missing or not plugged in. I will know in a few days after I change plugs. Wanted to ask the group how important is the display as far as an operational requirement. It is running without it.