Small Engine Troubleshooting Problems? Ask a Mechanic Now.
Welcome to JUST ANSWER small engines, let me try to help you !! I don't know it all, but maybe together we can get you a satisfactory answer!
The lines are overflow lines, There should be no fuel from them. The carburetor needle valve and float are not shutting off the fuel, so it comes out the vent lines. Correction is to replace the carburetor or rebuild it with with new needle valve.