I have a Cforce 500 new.  Only 10 hours on it. Maybe 70 miles.  It makes a whining noise when driving.  my 600 doesn't make this noise.  Is it normal for the 500

Does it sound like a hissing from the front of the motor under the handlebar area? If so mine did it new but has all but gone away now. The heat shields in my whole exhaust system neede to be tweeked and tightened though.