I was cutting grass. I began to lose power. I thought I was running out of gas and shut off the blades. I attempted to get to my garage but the motor then stopped. I can't get it to start now.

Remove the gas cap, refill the tank and for now keep the cap off. Full choke and try to start. If it turns over but doesn't fire check for spark in the plug. Pull the plug, replace the wire and ground the plug to the engine block, trun the key. Do you get a nice blue spark?