Method for driving a fastener with a fastener driving device having an automatic dual-mode trigger assembly

A method for operating a fastener driving device is disclosed. The method includes moving an input actuator of an actuating assembly into an operative position in response to movement of a contact trip assembly and a trigger member into the operative positions thereof. The contract trip assembly includes an output actuator. The method also includes moving an actuating member with respect to the trigger member between a first position and a second position, and moving a mode selecting member together with the actuating member relative to the trigger member between the first and second positions of the actuating member, and relatively moving the mode selecting member with respect to the actuating member.