Small Engine Troubleshooting Problems? Ask a Mechanic Now.
If you remove the spark plug, and ground it, do you have spark when cranking? If you have spark, put a teaspoon of fuel into the spark plug hole, re-install the spark plug and see if it will run for a few seconds.
Deere fuel tank has a suction tube in it, that goes in the top of the fuel tank. Check the tube and the fuel line all the way to the fuel pup for any damage or break. The line has to be vacuum tight for the fule ump to suck fuel from the tank. Tube can be accessed without removing the sheet metal.