Looks like an across the line cap, so that wouldn't have any bearing on voltage to chassis. If one end connected to the chassis, it would be a different story. Possibly the meter wasn't clicked all the way into the 200v spot? Dunno, looks like its on the right mode and such. I think I'd be tempted to verify leakage like Fred suggested. If its not excessive, put a grounded cord on it and call it a day. If it has a short from line to chassis, you'd have to figure out what is causing it otherwise it will blow the breakers.