First, drain all the fuel into a fuel safe container and not into glass container, or you can run the fuel tank dry.
In order to access the fuel lines the carburetor cover, carburetor, and the left hand and right hand housing will need to taken off.
Remove the two (2) carburetor cover screws and the (2) carburetor mounting screws. Remove the fuel lines from the carburetor and primer bulb.
Remove the 10 screws fastening the two housings together.
Once you have the left and right side housings removed you should have no problem replacing the fuel lines.
Two (2) fuel lines will connect between the carburetor and gas tank. One likely will press fit through for the fuel pickup line with filter inside the gas tank.
NOTE: Take note of which is the fuel supply line and which is the primer fuel line. Also make sure you remember the way the original lines are routed.
Here is a link to the owner's manual