Do what it says in yer owners manual, duh!!
I would drain most all the gas out of the tank/s, start it up and let it run out of gas. Then drain whats left in the carb. Then, while the oil is still warm, drain the oil and refill with whatever oil yer gonna use in the spring. No need to change the filter. Stick to what it says in the Kaw. engine owners manual.
" But let me tell you something ,folks: You can't fix stupid!
There's not a pill you can take, there's not a class you can go to. Stupid is forever!"
" Pay no attention to that man behind the curtain!