Repairs John Deere Gx75 cranks wont start no spark

Hi Everyone, need your help please.

I have a John Deere Gx75 lawn mower rider. k series 9 hp

it cranks no spark and no start,
i checked everything, battery is good, fuel is good, starter and parts are good.
changed the iginition coil still nothing

HEllllpppppp

Thanks Sam

Repairs John Deere Gx75 cranks wont start no spark