Except For 5MT Turbo Model

Remove the transmission assembly. <Ref. to REMOVAL , Manual Transmission Assembly .> <Ref. to REMOVAL , Manual Transmission Assembly .>
Remove the clutch cover and clutch disc. <Ref. to REMOVAL , Clutch Disc and Cover .>
Using the ST, remove the flywheel.
ST 498497100 CRANKSHAFT STOPPER

Fig 1: Removing Flywheel
Courtesy of SUBARU OF AMERICA, INC.