Yes my CIAO has a switch on top of the headlight. I can turn it to 11 o clock and 12 o clock but not 1. It was at 12 when the light came on, and has been there ever since i got it. I dont have a switch on my handlebar. Yes I mixed the gas. I am not sure what you are asking with the gas petcock, Im not sure what that is. Yes the choke is on. Thanks
VespaCIAO
P.S. - Sorry about the ignorance, but Ive gotta start somewhere.