I know this thread is three years old, but would like to make a small update.
Each year, the bike has been left in a cellar, garage, or shed in different parts of denmark. Sometimes the gas tank is almost empty, sometimes it's almost full, never any preservative added to the gas. The bike is parked as if I were to park it in the garage here at night. I just put the kickstand down, plug in the battery tender and walk away.
Each year, I take off the blankets, turn the key, and the bike starts up as if I had just driven it an hour earlier. The tires never have any flat spots. It's always perfect.
So my friends, its safe to say that the Monster S4 is the most reliable bike in the world.
Too bad it make the beast with two backsing hates chains