Section 19 (Cooling System (H4DOTC)): Thermostat: Removal

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Set the vehicle on a lift.
Lift-up the vehicle.
Remove the under cover.
Drain engine coolant completely.
< Ref. to , DRAINING OF ENGINE COOLANT , REPLACEMENT, Engine Coolant. >

Fig 1: Identifying Coolant Filler Tank Cap
Courtesy of SUBARU OF AMERICA, INC.
Disconnect the radiator outlet hose from the thermostat cover.

Fig 2: Disconnecting Radiator Outlet Hose From Thermostat Cover
Courtesy of SUBARU OF AMERICA, INC.
Remove the thermostat cover, and then remove the gasket and thermostat.

Fig 3: Removing Thermostat
Courtesy of SUBARU OF AMERICA, INC.