Fuel overflows (leaks) upon turning Roadstar 1700

Sounds like this may be a carb issue,,,, time to have a professional clean, set, and synchronize them!!

check schematic on fuel connection need a manual

Gas running out of the carb indicates that the internal float valve is not shutting off the flow when the float bowl fills up. Might need cleaned; might need a new float valve assembly. Not cranking is an electrical problem. If you mean that the engine cranks over but doesn't start - then this could be a related carb problem. Take the bike to a reputable repair center near you.

I had this same problem. What I discovered was the float needs adjusted on the carb. I set mine lower inthe bowl and it stopped the leaking. Reason for this happening is on hot days the fuel in the bowl will boil. This boiling action dumps in more fuel and the carb spits it out the air breather.