My neighbor gave me a .40 rossi engine a few weeks back and I cleaned it up and noticed there wasnt a place for a pressure line from the mufflerto the tank. Do you need the pressure line, and if not, how do you keep the tank from making a vacuum?
Also, on the bottom of the muffler there is a screw which i have deemed pointless. does anyone think this could be a place for the pressure line?
Any help is appreciated.