Remove the transaxle assembly.
(Refer to Manual Transaxle System - "Manual Transaxle")
Remove the dual mass flywheel.
(Refer to Cylinder Block Assembly - "Flywheel")
Remove the rear oil seal (A).
Install a new rear oil seal.
Apply engine oil to a new oil seal lip.
Using the SST(09231-H1100, 09231-2B200) and a hammer, tap in the oil seal until its surface is flush with the rear oil seal retainer edge.
Install the other parts in the reverse order of removal.