I have just repaired a 16" craftsman with a gas leak as well. I assume these two saws are close as far as repairs are concerned.
The only way to repair the line is a complete tear down of your saw to all seperate components because the gas line weaves in between these parts. Drain all the gas out first if there is any in the saw. Start with the gas tank first, seperating it's two halves.This is the gas line starting point at the gas filter. Be careful when seperating gasketed parts so as not to rip or tear the gaskets, you can then reuse them when rebuilding the saw. Loosen the screws, seperate carefully, a razor blade may be needed to seperate the gasket from one side of it's contact. Please note the location of the old gas line route as you tear down the saw, so you can reinstall it in the same manner. You'll have to pull of the clutch and magneto to get to the two screws holding on the kill switch plate cover. Also take note of the manual oiler button shaft, and gas line holes in the kill switch plate for proper reinstallation. The gas line is a 3/16" line , you'll need about 16" to pull thru the various holes as you route the line thru the body parts. A little soapy water on the exterior of the gas line and cut at an angle on the end, will help to feed it thru the holes, then grab it with some pliers and pull. NO tight bends! Be sure of clearance from magneto so it doesn't rub. I did mine in about 10 minutes. Assemble the parts as you go, leaving the carb connection last. It's easier to install the line on the carb with the carb removed, also heating up the line on the end when putting it on the gas filter in the gas tank and on the carb, will help due to the larger size of these fittings.
zappz, April 2006