Paul
I doubt that the grease job had anything to do with your problem. You can down load the wiring diagram from the Cub parts site, just put in your model # and it shows the diagram in the parts list. Just wondering if maybe you pinched a wire to the fuel shut down solenoid when you did the breather.
http://www.cubcadet.com/webapp/wcs/s...00505_-1_image
If you need more help PM me with your phone # and I'll try to help.
Mac