Going off the top of my head at the moment but do as kev said....

Switch off Engine Run switch, switch OFF Key switch. Press both SELECT & RESET buttons and then switch ON Key switch. Keep SELECT & RESET buttons pressed for at least 8 seconds. Display then changes to "DIAG". Release SELECT & RESET buttons.
Select CO1 mode by pressing the SELECT button.

Then press both the select and reset buttons together until you hear a click.

Then you will see a "0" in the top right of your speedo.

Then start your bike and you can see your rpm.

Hope this is correct as my bike is somewhere else at the moment.