Two ways Mac If you fill up after the reserve light has come on then the bike will reset automatically after restarting and a few hundred yards of riding. If you fill up before the light comes on pressing and holding for 3 secs or so the left hand button on the dash does what's required.
Ah - that explains it - I swear I filled up yesterday on reserve and the tacho carried on where it left off. I'll give the manual a gander and try to set it to auto...
You do it before starting the engine but I can't remember the method, even though I did mine the other day!
Yeah - I looked in the manual and thought it looked like trying to program the space shuttle lol. But then I have a low attention spa.......Ooh look - a butterfly....