The manual calls for the sump drain to be installed in the bottom of the sump. A hole is then cut into the bottom of the fuselage.

Malcolm has a different approach. Install the sump drain remotely. Move it forward and to the pilot side. This approach has two benefits. One; In the event of a gear up or gear collapse, the fuel system will remain intact. Two; It is easier to drain the sump to check for fuel contaminates.

First a pilot hole is drilled through the fuselage close to the whaletail and pilot side wiring duct. Then the hole in enlarged from the outside to accommodate the drain valve.

Then the pilot hole is enlarged to accept the tubing.

Finally, the 1/4″ fuel line is run from the sump, through the gear bulkhead to the drain valve elbow.