Shut off the branch circuit breakers on the Sylvania breaker box before attempting to remove the breakers.
Turn off the main breaker and remove the cover panel of the breaker box by unfastening the screws that secure the panel with a screwdriver.
Loosen the screw on the breaker that secures the electrical wire to the circuit with a screwdriver and remove the wire from the breaker.
Pry the breaker out of the breaker box gently with the screwdriver and set it aside.
Repeat for each additional breaker that needs to be removed from the Sylvania breaker box.