Is it possible for my newly purchased bike not to have a mixture screw. I did a carb rebuild, but it is still running rough. Mixture screw appears to be missing. Bike only has 200 miles. Has pretty much been sitting for the past nine years.
It has it but they are plugged from the factory. You have to drill out the plug and underneath the plug lies the mixture screw. Mine came unplugged so I don't know the exact procedure but I'm sure someone will chime in who does