|Nautech Autohelm MK II rebuilt and repaired winter 2011-12 and works well within limits of about |
15 degs port/starboard deviation.
The manual for Autohelm 800 while not the same as the MK II shares most features with the xception that the 800 has a feature to adjust for rough conditions.
Compass drum mounting screw housing broken, drum mount twisted. Probably jammed in place due to drum tilt, resulting in spring stretched.
Rebuild including fabricating new drum mount.