Subaru 2009 IMPREZA Service Manual page 1032

Drain Filter
EMISSION CONTROL (AUX. EMISSION CONTROL DEVICES)
11.Drain Filter
A: SPECIFICATION
The drain valve is a non-disassembled part, so do
not remove the drain filter from drain valve. Refer to
"Canister" for removal and installation procedures.
<Ref. to EC(H4DOTC)-7, REMOVAL, Canister.>
<Ref. to EC(H4DOTC)-9, INSTALLATION, Canis-
ter.>
EC(H4DOTC)-20