How to turn a motorcycle off?

I know from personal experience that it's a good idea to turn the petcock off on a carbed bike. I bought a 250 Ninja that had a fully warm engine when I arrived to look at it. It ran OK when I tested it. Turned out that the carb bowl needles leaked enough to fill the crank case with fuel which ruined the engine. It was hard to start with a cold engine due to low compression.

Lesson not learned very well though because I don't turn it off on my current V Star 250. I checked the oil level several times right after I got it to make sure it doesn't leak.

For me it is always the kill switch to keep the muscle memory and keep the action instant and natural when E36 M3 hits the fan; no problems to report so far.

So...leave it in gear, clutch in, kill switch, key off, petcock off (gravity-fed carb.)

Start procedure is petcock on, key on, shift to neutral, choke on, start.

Always the same means it is burned into memory and eliminates berkeley ups.