My Cub Cadet LTX 1045 wont start

Thought it was just a dead battery. Replaced and installed a new one. The engine now cranks (where i had no power before) but it still wont turn over. I went ahead and removed old fuel from the tank. Cleaned out the tank and put in new fuel. Still cranks but still not turning over. The tractor is only about a year and a half old. Ive reached my scope of knowledge in trouble shooting it and hope it is still an easy fix.