Speedo cable or Throw the scooter away?

[Miker85085]

I have a 2013 PCC Envy 150cc with an odometer issue. The speedo works just fine and is correctly calibrated. I checked it with a GPS. The issue is the odometer will not count. I took it apart and the dials move very freely. Any thoughts or do you think it's the speedo cable?. Also how do you measure the spedo cable? do you take the actual cable measurement, or the jacket measurement. Thanks.