M95S wouldn't start. Drained fuel tanks, cleaned. Replacedspin on fuel filter. Cleaned water separator. Got air out of lines. Turn key to second position, waited 30 seconds - turned key to start and immediately fired up and runs. Repeated daily starting for the next 5 to 7 days. Tractor fired right up and ran. Then went to start after setting for 5 to 7 days and motor turned over 5 to 7 seconds then would fire up and run. Came back next day hesitated for a few seconds then started. Now came back after a few days and went to start but unit only turns over and does not start. Ideas of what problem could be. Thanks