The Rudder and Support Set comes partially unassembled. There are two main pieces, the actual metal Rudder and the plastic Support that attaches to the transom. First slide the Rudder into the swivel part of the Rudder. Match the 45 degree edge on the Rudder to the machine 45 degree cut on the Support, at attach firmly with the two supplied screws. Next, attach the whole assembly to the transom with the supplied two screws.
You can now attache the Servo rod to the arm on the left side of the Rudder assembly.