I wanted to follow up and let you know what I found. I got the service manual and did some electrical troubleshooting. I identified the ignition switch as the likely culprit. When I put a jumper around it, the motor would crank. Got a new ignition switch module with the Printed Circuit Board Assembly (couldn't get just the key switch). Engine started right away. Only problem is that fuel started pouring out around the carburetor. I think there is a fuel line crack/break. Good to know I have something to keep me busy.