Its a 2 stroke for sure
2 stroke
It's a 4 stroke.
I'ts a four stroke
215cc air cooled 4 stroke
No they are all SOHC 4 stroke singles.
The KX250 is a 2 stroke engine the KX250F is a 4 stroke engine
Does it have valves (4 stroke) 2 stroke has ports Do you have to mix gas/oil (2 stroke)
Yes
The Kawasaki Bayou is a 4 stroke.
It depends on the type. For example, the procedure is completely different for a 2-stroke compared to a 4-stroke. And it's different for a 2-stroke with oil injection compared to a 2-stroke with a block off kit. Ask the owner.
No, it is a two stroke in the 2005 model I looked up.
If it's a 4 stroke there is no mixing oil and gas. the olny oil is in the crank case