Pull the spark plug wire off the generator's plugs to disable the motor.
Find a location to secure the electrical box to the generator's frame. This is ideally in a location where a outlet is conveniently placed, and the metal frame can properly support the electrical box.
Hold the electrical box against the frame and secure with at least two self taping screws and a drill.
Feed the generator's 220 volt wiring into the side of the electrical box and secure by tightening the wire compression mechanism.
Strip 3/8 inches of insulation off the four wires in the 220 volt wiring. Loosen the four terminal screws in the outlet.
Push the red and black wire into the two brass (commonly outside) terminals and tighten them down.
Insert the white wire into the silver terminal and tighten it down. Insert the green or bare wire into the green ground terminal and tighten it down.
Push the wiring into the electrical box and secure the outlet to the box with the screws provided. Install the cover on the outlet with a screwdriver.