Note: Make sure that screws do not fall into fuel tank: cover fuel tank filler neck with cloth.
Open the fuel filler cap.
Remove the bottom part of the filler cap.
Insert key in lock barrel and press down on retainer (1).
Pull out lock barrel with key.
Grease the new lock barrel with Optimoly MP 3.
Insert the lock barrel with the key.
Installation is the reverse of the removal procedure.