If you follow the main pipe from the fuel filter on the bulkhead to the inlet on the pump you will see a banjo coupling with a hexagon shaped head and 2 brass washers, one either side of coupling. Undo and remove this and recover the 2 brass washers. Then inside the pump is where you will find a little wire gauze filter. You can maybe clean this but some people this but some people throw them away. You might find it easier to slacken off the power steering pump and swing it to one side to gain better access.