Sportsman 700 ’02 incorrect ignition

Hi, I’m Polish and I can not exactly describe it.
ATV stood in the water two days.I Replaced Ignition Coil Controller and fired. The engine warms up very quickly and belched heat. He stopped screwed up on speed. Left finally died. After cooling, the fired normally. Before the engine warmed up (2 minutes) he worked normally. Later we go again. I stripped the stator and now I have no spark.
What do you think?