Subaru Impreza 2004 - Manual (Page 93)

PM-17
PERIODIC MAINTENANCE SERVICES
Fuel Filter
9. Fuel Filter
A: REPLACEMENT
For fuel filter replacement procedures, refer to “FU”
section.
SOHC model
<Ref. to FU(H4SO)-60, Fuel Filter.>
DOHC Turbo model
<Ref. to FU(H4DOTC)-66, Fuel Filter.>
B: INSPECTION
1) If it is clogged, or if replacement interval has
been reached, replace it.
2) If water is found in it, shake and expel the water
from inlet port.