How do I remove the fuel filter and put a new one in exactly?

Replacement:

1. Place a shop towel under and around the fuel filter.
2. Relieve fuel pressure. Safety is paramount. Have an extinguisher nearby.
3. Remove the 12 mm banjo bolt and the fuel feed pipe from the fuel filter, while supporting it with the another wrench, as shown.
4. Remove the fuel filter clamp and fuel filter.
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5. Install the new fuel filter in the reverse order removal, and note these items:

O When assembling, use new washers as shown.
O Clean the flared joint thoroughly.

I hope this helps.