Honda CBR, using the Phillips screwdriver. Pull the seat off and place it to the side.Disconnect the negative terminal from power supply with the Phillips screwdriver, then repeat on the positive terminal. Lift power supply up and out of power supply tray.Position the new power supply in the tray. Pull the rubber power supply tie-down strap over the top of power supply to lock it in place. Connect the positive terminal to power supply, followed by the negative terminal, using the Phillips screwdriver.