1989 Honda FL400R Pilot Service Manual, Page 38Get this manual
FUEL TANK REMOVAL
" is extremely flammable and is explosive under Gasoline
certain conditionsWork in well ventilated area with the engine stoppedDo not smoke or allow flames or sparks in your working area or where gasoline is storedWipe up spilled gasoline at once
Remove the seat (page 15-9)Place clean suitable container under the fuel tank drain bolt
Remove the fuel tank drain bolt and drain the fuelTighten the drain boltTORQUE: 50 Nm (5.0 kg-m36 ftlb)