How do you change a spark plug?

How do you change the spark plug on a Kawasaki Prairie 300 4x4? I can't even find the spark plug, how do you get to it?
How do you change a spark plug?
On one side of the cylinder head is a round cover.

On the %26quot;other side%26quot; of the cylinder head is the spark plug
How do you change a spark plug?
Its usually attached to the engine, at the top of each piston, some engines have the pistons straight up and down some have them at 45deg. Most of the time its in a tight yet accessible place, and they will have a thick black wire connected to them.
Only one at a time . And find the proper gaping. half inch, deep socket.
If you don't know where they are,

get a mechanic to do it. You'll probably screw something up.
lots of dealerships offer an online parts finch it will show you were things are at and what parts they are related to