In Reply to: Sediment bowl valve stem posted by Larry on November 13, 2021 at 14:34:07:
What you are referring to as a retaining nut is a nut that secures the packing material around the valve stem. Often it is only necessary to tighten the packing nut some to make a good seal around the valve stem. I like to keep the packing nut in place (not tight) to keep alignment on the valve stem while I gently turn the valve stem counterclockwise to remove it. Once the stem has been unseated then the packing nut can be removed in order that the entire valve stem can be removed. (I assume you have drained the gas tank already).
Sometimes simply adding a bit more packing thread under the packing nut and tightening the nut can fix a leak around the valve stem. This procedure may not require draining the tank depending on the free length of valve stem to provide room to install more seal thread.