To my knowledge, the difference between a CD-10 and a CD-11 is that the earlier CD-10 is not setup for remote control. The later CD-11 has a keyway in the shifter to accommodate the remote shifter cable. The earlier CD-10 does not have a keyway in the shifter.
Another difference is that the CD-11 has small gussets in the carry handle that were designed to attach a carry handle extension. The carry handle extension has a keyway to accommodate a steering cable. The CD-10 does not have the gussets.
In 1954, Evinrude made the same changes on the Fleetwin model.
Dave, I attached an Owner’s Manual for you and a link to a Parts Manual cuz it was too big to post here.
https://we.tl/t-nAzWw31DrI
Edit: had a problem including the PDF file for the Owner’s Manual so here’s a link to download both… https://we.tl/t-pwIQ9T8E4Z
Just the Owner’s Manual… https://we.tl/t-ZVcCs1Vhod