An electromotive servo drive includes a drive motor, a drive train, which is fitted with an output member and includes at least one gear stage for reducing the rotation speed of the motor, and a rotatable hand-operated adjusting shaft for adjusting the output member of the drive train such that at least the drive train, arranged between the adjusting shaft and the output member, is self-locking. The list of related symbols can include the related symbols and a description of each symbol. After the core assembly is molded, the spacers are removed, the core assembly is wrapped in the outer fibrous material, and the wrapped core assembly is placed in the second mold cavity that is formed by the original mold but without the spacers.