Master Cylinder: Disassembly

Remove the straight pin and nipple.

Fig 1: Installing Master Cylinder To Vehicle Body
Courtesy of SUBARU OF AMERICA, INC.
Remove the oil seal.

Fig 2: Identifying Oil Seal And Master Cylinder
Courtesy of SUBARU OF AMERICA, INC.
Move the seat towards the rear.

Fig 3: Moving Seat
Courtesy of SUBARU OF AMERICA, INC.
Remove the piston stop ring.
CAUTION: When removing the piston stop ring, be careful to prevent the rod, washer, piston and return spring from popping out.