You mean the kill switch? You should get in the habit of just using the key to turn the bike off. I know in the class they teach to use the kill switch, but it's really only there for emergencies. A lot of people have had times where they forget their key in the bike and leave it because they used the kill switch to shut it down. If you get in the habit of always using the key to shut it down then you are also sure you took the key out and have it with you.. When turning off the bike you should always stop, put it in neutral, then turn off the key. No need to kill switch it.