So I started my spring tune up today of my John Deere D110 lawn tractor. I changed the oil, fuel filter, air filter and lubed everything up I pulled out the spark plug and some how without using a wrench managed to strip the threads on the cylinder head. I pulled the cylinder head off re tapped the threads and installed a new plug no problem! I put everything back together fueled it up and it began to crank and never turned over. I had already started it earlier to get it from the shed to the garage to work on it so I know it started prior to doing the tune up. I checked the gap on the plug all good. I checked to make sure the plug had a spark by pulling it and laying it on the motor, all good. I put my finger over the hole to make sure I had compression, again all good. I attempted to pour some fuel into the spark plug hole but due to its location I had a hard time getting enough in but It didn't do anything anyway. I pulled the fuel line off the carburetor and it had fuel up to that point. This is where the frustration laid in, not to mention the battery being dead from so many attempts and me being out of options! I had to walk away from this point! I am wondering if I am getting fuel to the plug after the carburetor. Not sure why it would have happened though in the small amount of time i did the tune up or if I managed to foul something up in the process of the extensive spark plug replacement! Not sure where to go from here and any help would be greatly appreciated. Thank you in advance!