Small Engines (Lawn Mowers, etc.): coil on a kohler thats on a John Deere, flywheel, model numbers

Question
QUESTION:  mower sat out in weather with no hood a year i bought it drained fuel put in fresh i had very weak spark took out plug cleaned and replaced i did that time and time again it keep flooding then it started. run good for hours then back to weak spark and flooding. i went in to the flywheel and the contacts in flywheel was rusty and so was the three contacts on the coil i wire brushed all of that put it back together set gap between the two with a dollar bill...ran like a new one for a couple of hours now no spark at all reset gap with business card. still no spark. is coil bad?  and whats the piece under the flywheel could it be that? i unplug the small wire on coil still no spark.
Thanks  
glen
ANSWER:   Hello Glen:

 Is this an OLder Engine? If Yes, then the Point Set May need Replacing. Send me the Model Numbers Off the Engine, Please. With these I can Locate a Breakdown/IPL of the Engine and Better Assist you. Thanks.

 Respectfully

 John

---------- FOLLOW-UP ----------

QUESTION: no points...no igniter.. just a coil by flywheel
john deere 255

Answer
 Hello Again Glen:

 Then the Coil May be Bad. The Coil Contains the Ignition Module on this Engine. The Component Under the Flywheel is the Stator. This is the Charging Systen for you Engine. You can View a Breakdown/IPL at this Addy http://jdpc.deere.com/jdpc/servlet/com.deere.u90490.partscatalog.view.servlets.H and Enter the Mowers Model Numbers. Hope this Helps. I am here if you Require more Assistance. Thanks.

 Good Luck

 Respectfully

 John