Subaru 2009 IMPREZA Service Manual page 381

Oil Pressure Switch
LUBRICATION
4) Install the generator to the bracket. <Ref. to
SC(H4SO)-16, INSTALLATION, Generator.>
5) Connect the ground cable to battery.
IN-00203
C: INSPECTION
Check the oil pressure switch installation portion for
oil leakage and oil seepage.
LU(H4SO)-20