you may have a bad engine ignition/start module
see Chart 3 in the service manual for testing circuits associated.
only other issue may be a bad connection in the fuel solenoid circuit or a bad fuel solenoid coil.
that troubleshooting chart takes you through all that
get the serial number off the data plate
go to gogenie.com and go to the service manual section and download the service manual for this unit serial number.
It has all information you need to troubleshoot this problem.
This is ONLY to be used to report flooding, spam, advertising and problematic (harassing, abusive or crude) posts.