welcome. You can download the service manual from the tech section. In it it gives the reset codes. All you can do with them is switch from metric to US on the speedometer and odometer. There is no "computer" as such on the 650 to reset, just a basic EFI system. It resets every time you turn on the ignition. If you want to get into changing the fuel mapping you need to buy and fit a Power Commander, all EFI settings are on ROM and not normally changeable.
Last edited by twowheels; 01-14-2018 at 03:38 PM.