Honda Civic Service Manual: Engine Cooling

Engine

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Coolant Replacement (R18A9)

1. Radiator Cap 1. Wait until the engine is cool, then carefully remove the radiator cap. ...

See also:

Honda Civic Service Manual. Rear Seat-Back Removal and Installation - Split Fold Down type (4-door)
Removal 1. Right Rear Seat-Back - Split Fold Down 1. Remove the right rear seat-back (A). 2. Center Pivot Bracket - Split Fold Down ...