Kohler pro hp will not start

I have a Craftsman LTZ 1000 mower with a Kohler Pro 18HP engine that will not start. It has not run for 2 years so I assumed that the carb was gummed up too badly to pass fuel correctly, it also dumped fuel past the solenoid and messed up the oil. I replaced the carb, changed the oil and plug. Still no joy. I verified that the plug is getting spark and that fuel is getting to the cylinder. I am out of ideas. I am told that there is a key that holds the flywheel to the crank that might be sheared. How can I prove this?

:welcome: Welcome to the forum!

I'm going to move this thread over to our Craftsman section.

Straitness of the deck has nothing to do with where anything is except the cutting tips of the blades.
Measure them to the ground, the bodywork means nothing