9.1. The filter is clipped onto the base of the fuel pick-up unit
2. Wash the pick-up filter in fresh fuel to remove any debris from it. Inspect the filter for signs of clogging or splitting, and renew if necessary.
3. Fit the filter securely to the base of the pickup unit, then refit the unit to the fuel tank as described in Chapter 4B.
Source of the article is website (peugeotbook.ru)
