EC300, fuel drained during winter
 

Hello,

Just took my 2009 EC300 out of winter storage. I had left the fuel petcock open and fuel had drained down on the floor. There's plenty of 2-stroke oil under the bike...

Is there any actual damage done to the transmission oil or to the engine itself, or does the bike just need a dried spark plug?

Probably just dribbled out of the carb, but it's possible that the crank case got filled up too. drain the crank case, and maybe check your carb float. Trans should not have been affected at all.