Posted 03/08/2015 by Lars Ström:

Out of memory the standard autopilot installation had a rotating drive sitting on a cradle under the cockpit floor. If you have a steering system drawing in the ship’s papers it shows the arrangement.

Your description indicates your set up may be slightly different. 

Fracmo is still there, and it is suggested you contact them for possible replacement:  www.fracmo.com

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Posted 03/08/2015 by Roger Bohnert / Hawk:

I have a S-46 Mk I (hull #80) with B & G instruments and autopilot controller about 15 years old. The autopilot drive, however, may be a Swan design as it is a small chain/sprocket assembly in the front of the steering pedestal. The electric motor is a Fracmo, made in England and has a serial number that begins with “H00707….”  A welded bracket holds this motor/clutch assembly.

Does anyone know where I can get the motor/clutch assembly or know of a suitable replacement?

Swan 46 – Hawk