When the low fuel light comes on. You have about 1 gallon left. There is no petcock. I always reset my trip A odometer when I fill up. That way I know how far I've gone on the tank.
99 Kawasaki Vulcan 800 (sold)
2012 Vegas (traded)
2013 Cross Country Tour
Victory Tri-Ovals, Reverse Kit, Lloydz air filter, Lloydz quarter turn throttle ring, PCV, Lloydz Touring cams, HMD Bars, DGD keyless ignition, Rockford Fosgate Amp, klockworks windshield. 119hp 123lbs torque.