Re: Tools and tips needed for assembling Motorized Bicycle kits
That screw on the carb you speak of is only an idle adjustment, it will have nothing to do with whether or not the engine will run or how it runs, all it determines is if the round slide in carb is lifter enough for it to idle when the twist throttle is released.
if the engine will not run, you have another issue which could be carb problem but will not be an issue with the idle screw.
I set the needle clip second groove from the top on mine and that seems to be a good spot and will for sure allow the engine to run if all else is right.
I dont always ride WOT, but when I do..I do my best to keep the rubber side down..Ride safely my friends!