Locate the main tank sump drain

Push the end of the tube into the fuel test jar (found under the left seat)

Undo the white fuel line clamp

Drain a small quantity of fuel into the fuel test jar by using your fingers to press the upper end of the drain tube to start the flow

Check for contamination (water/dirt/debris)

Verify it is the approved fuel color/type - 100LL should be a blue tint

Pour the fuel back into the fuel tank

Return the fuel test jar under the left seat

Re-clamp the white fuel line clamp

Ensure the tube is not leaking fuel