How do you drain the gas on a Yamaha TTR 125?

To drain the gas on a Yamaha TTR 125, start by locating the fuel petcock, usually found on the bottom of the fuel tank. Turn the petcock to the "OFF" position, then disconnect the fuel line from the carburetor and place it in a container to catch the fuel. You can also remove the carburetor drain screw, allowing any remaining fuel to flow out. Make sure to handle the fuel safely and dispose of it properly.