Fuel Tank Unit Removal and Installation: Installation

Temporarily attach a new base gasket (A) to the fuel tank unit (B) insert the fuel tank unit partially into the fuel tank.
NOTE:
- Be careful not to damage the new base gasket.
- Be careful not to bend the fuel gauge sending unit.
- Do not coat the base gasket with oil.
  
  Fig 1: Inserting Fuel Tank Unit Into Fuel Tank
  Courtesy of AMERICAN HONDA MOTOR CO., INC.
Transfer the base gasket (A) from the fuel tank unit to the fuel tank.

Fig 2: Transferring Base Gasket From Fuel Tank Unit To Fuel Tank
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Align the marks (B) on the fuel tank and the fuel tank unit, then insert the fuel tank unit into the fuel tank until the fuel tank unit rests on top of the base gasket.
NOTE: To prevent a fuel leak, check the base gasket, visually or by hand, to make sure it is not pinched.
Tighten a new locknut (A) by hand with a new locknut plate (B).
NOTE: Before tightening, align the mark (C) on the locknut with the start of the threads (D).

Fig 3: Identifying Mark On Locknut And Locknut Plate
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Using the special tool, tighten a new locknut to the specified torque.
NOTE:
- After tightening, make sure the marks (A) are still aligned.
- After installation, check the base gasket, visually or by hand, to be sure it is not pinched.
  
  Fig 4: View Of Tightening Locknut Using Special Tool With Torque Specifications
  Courtesy of AMERICAN HONDA MOTOR CO., INC.
Connect the fuel tank unit 4P connector, then connect the quick-connect fitting.
Reconnect the negative cable to the battery, and turn the ignition switch to ON (II) (but do not operate the starter motor). The fuel pump will run for about 2 seconds, and fuel pressure will rise. Repeat two or three times, then make sure there are no fuel leaks.
Install the access panel on the floor.
Install the fuel fill cap.