The Chieftain is the first throttle by wire fuel injected fancy pants bike I'll own so I wonder to myself....self is there a petcock to trip over to my reserve.....seems like a valid question but then I think I've never had a bike with a working fuel gauge for that matter just the cough sputter and flip the switch. So I downloaded the 2014 Owners manual and answered my question. Pg 125 in the specifications chart it says the tank is 5.5 gallons and the FUEL LIGHT comes on at 1,o gallons left in the tank. So the reserve is a light and should my fancy pants electronic dodad go out for some reason there is a taletell way to know how much fuel is left. Directions might help for this complex task: 1) Turn off your scooter. 2) Straddle the seat with your legs while standing firmly on the ground. 3) Place hands on handlebars firmly. 4) Shake that bad boy side to side while lowering your head to confirm the splish splash. 4) Do this with some frequency to perfect your audiological skills. Best of luck monitoring the air temperature and tire pressure radio station. Got to love modern man. Keep the shiny side up.