Steve -
The old/legacy Autohelm user manuals are still on the
Raymarine site. Go to the
Raymarine.com site, select "Customer Service", then on the Retired Manuals list, select Autopoilts, etc. (This is for all you others doing a search for old Autohelm and Nautec manuals.)
Here is the link - replace "#" with "." and remove the space after the slashes "/" (I'm a newbie and can't post links)
www#raymarine# com/ SubmittedFiles/ Handbooks/ Legacy_Handbooks/
Autopilot/ AH2000.pdf
Hope this helps you.
TomT
S/V Lenochka
1982 Cal 9.2