Small Engines (Lawn Mowers, etc.): Craftsman wont start when warm, eager 1 engine, breather tube

Question
HiJohn, I have a craftsman self propelled 6.75 eager 1/ Engine model 143.006706 / Engine family ytpxs2071ba  and model#917.377690  My problem is when mower is cold it starts right up and runs fine for 10-15 minutes then i shut it off to empty the bag it wont start. if i pull the air filter off it starts on 4or5 pulls. It seems like its flooded, i pull air filter off, after 4or5 pulls i see smoke coming out the muffler and it starts. put the filter back on and it wont start.  ive replaced air filter, spark plug, carb and float assembly, replaced breather tube drained fuel tank. im drawing a blank. can you give me some insight. please!

Answer
 Hello Mike:

 Run the Mower Until it Quits and then Check the Engine for Fire at the Spark Plug. If No Fire, then the Coil/Ignition Module is Bad. If there is Fire, then Check the Gas Tank Cap and Make sure it is Venting the Tank Properly. You can View a Breakdown of the Engine at this Addy http://www.outdoordistributors.com/ and Follow the Instruction to Locate the Breakdown. Hope this Helps. I am here if you Require more Assistance. Let me know what Happens, Please. I enjoy knowing the Outcome. Thanks.

 Good Luck

 Respectfully

 John