In the owner's manual, it says the fuel tank shall be switched off when parking your bike for longer than a few hours, to prevent fuel running into the Cab. I follow the rule so far but occationally forget to turn it on when riding. It had not caused too much trouble until today. I did not warm up the bike. There was a traffic light in Red about 50 meters from where I parked. So I line-filtered to the front. Just when the light turned green the bike stopped. It took me a few tries before realising that was the fule switch I forgot to turn on. I felt quite embarrassing althrough the drivers behind me did not make a sound on it. Does anyone know any technical reasons why we need to turn off fuel when parking? What problems we will be facing if we leave it on at all time? Thanks.