We have cut our line and blown it out extremely well. Earl's has an excellent video online that shows the best way to cut a fuel, water, or oil line. Go to www
.anplumbing.com/installation.html. Any time you cut a fuel, oil, or water line, take an air gun and blow out the hose. This is especially critical for the line that runs between the filter (fuel or oil) and the motor. If you fail to clean the hose you might allow trash to pass through the line. It won't get trapped by the filter because it's on the outlet side. You can see here that we have attached the base of the fuel filter and slid it over the hose. It's a tight fit but to ensure that the fitting isn't pulled away from the hose, wrap some tape around the hose to where it butts up against the fitting's base. When you tighten up the fitting to the base, the tape will show you if the fitting has pulled off the hose.