Originally Posted by 2door
...I always shut off the petcock when I park the bike. The hardest thing is remembering to turn it on when you're ready to ride again. It can be very embarrassing, even to yourself to 'run out of gas' if you forget to open the petcock.
This and kill switches have been reason for much unwanted exercise for myself. I once tried for over half an hour to start a bike, with an on/off kill switch, before I remembered to turn the switch on. Can't count how many times my buddy has "run out of gas" because he didn't turn the fuel valve on.