There are four rivets for all models except the VooDoo Dove, Teal, and Blue Wing Teal, which only have two rivets. Must be drilled out using a drill and drill bit. This removes the motor and mounting bracket from the shell. Remove the two setscrews securing the motor to the mounting bracket and remove the magnetic adapters from the motor. Steps for installing the motor and mounting bracket into the decoy shell are in exact reverse order as steps for removing.