Honda EU3000is no spark

I have a no spark condition in this inverter generator.  I do not have a shop manual.  Been feverishly searching on a free download to no avail.
 
I have isolated the low oil switch and changed the spark plug.    Looking to diagnose coil without removing  it from engine. Have not determined if kill switch is good.  Cannot find correct wires to test.  Any help would be appreciated.