You can cut the end of the fuel line at an angle so that you can get it started into the tank. That is, cut the tubing so that it is pointed on the end. You can place some silicone grease on the tubing next to the tank and below where your fingers will be when pushing the tubing into the tank. Twisting the tubing as you push it into the tank will make the job easier. Make sure you have the correct diameter tubing so that it will fit tight in the tank hole, but will still pass into the hole. The tubing runs about fifty cents per foot and can be purchased from a small engine repair shop or parts shop. Good luck.
Ted Meredith, November 2006