I'm a new rider and I would like to understand what happens and how much warning you get when the bike needs to be switched to reserve. I haven't as yet needed to switch to reserve preferring to fill up well before hand. So what are the warning signs other than I can see the fuel guage getting low. Of most concern is that the bike would stop at an inopportune moment due to lack of fuel. I expect it gives a cough / splutter beforehand. What can I expect?